CHROMOSOME NUMBERS OF THE FAMILY CRUCIFERAE. II

1965 ◽  
Vol 43 (6) ◽  
pp. 657-668 ◽  
Author(s):  
Gerald A. Mulligan
Keyword(s):  
North American ◽  
Chromosome Numbers ◽  
North American Species ◽  
Base Number ◽  
The Family ◽  
First Time

Chromosome numbers and taxonomic discussions are given for North American material of species in the genera Braya and Cardamine. The following chromosome numbers are reported for the first time: Braya humilis s.l., n = 14 and 2n = 28; Cardamine angulata, n = 20, and 2n = 40; C. cordifolia, 2n = 24; C. microphylla, 2n = 32; C. occidentalis, n = 32 and 2n = 64; C. oligosperma, 2n = 16; C. pensylvanica, 2n = 64; C. umbellata, n = 24 and 2n = 48. It is concluded that the base number of Braya is x = 7 not x = 8 and that North American species of Cardamine have the base numbers x = 6, 8, and 10.

NORTH AMERICAN WATER MITES OF THE FAMILY MOMONIIDAE VIETS (ACARI: ARRENUROIDEA). IV. REVISION OF SPECIES OF STYGOMOMONIA (SENSU STRICTO) SZALAY, 1943

1991 ◽  
Vol 123 (3) ◽  
pp. 501-558 ◽  
Author(s):  
Ian M. Smith
Keyword(s):  
New Species ◽  
North American ◽  
Sensu Stricto ◽  
North American Species ◽  
Water Mites ◽  
Dispersal Patterns ◽  
The Family ◽  
Three New Species ◽  
New Diagnosis ◽  
First Time

AbstractMorphological, life history, and distributional data are presented for North American species of the subgenus Stygomomonia (sensu stricto) Szalay, 1943. Adults of the seven previously recognized species are redescribed, and deutonymphs of five of these species are described for the first time. Two species, S. (s.s.) neomexicana Cook and S. (s.s.) occidentalis Cook are substantially revised on the basis of an examination of the types and extensive series of newly collected specimens. Three new species are described, S. (s.s.) californiensis on the basis of deutonymphs and adults, and S. (s.s.) imamurai and S. (s.s.) cooki on the basis of adults. A new diagnosis of the subgenus is proposed and discussed, the relationships of the various species are discussed, and a key to deutonymphs and adults of North American species is presented. New distributional data are presented for all species, and dispersal patterns from Pleistocene refugia are discussed.

CYTOTAXONOMY, PHYLOGENY, AND CANADIAN DISTRIBUTION OF CIRSIUM UNDULATUM AND CIRSIUM FLODMANII

1961 ◽  
Vol 39 (1) ◽  
pp. 21-33 ◽  
Author(s):  
C. Frankton ◽  
R. J. Moore
Keyword(s):  
North American ◽  
Chromosome Numbers ◽  
World Wide ◽  
North American Species ◽  
Base Number ◽  
Total Length ◽  
The World ◽  
Cirsium Undulatum

The morphology and specific differences of Cirsium undulatum (Nutt.) Spreng. and of C. flodmanii (Rydb.) Arthur are described and their Canadian distributions are reported in detail. The chromosome numbers are C. undulatum f. undulatum and f. album Farwell, 2n = 26; C. flodmanii f. flodmanii and f. albiflorum D. Löve, 2n = 22. The origin of four North American species of Cirsium that do not follow the world-wide base number 17 is discussed; it is postulated that reduction in number has occurred by translocations. The chromosomes of species with reduced numbers are larger than those of the unreduced species but the total length of the chromosomes of both groups is approximately the same.

CHROMOSOME NUMBERS OF THE FAMILY CRUCIFERAE. III

1966 ◽  
Vol 44 (3) ◽  
pp. 309-319 ◽  
Author(s):  
Gerald A. Mulligan
Keyword(s):  
North American ◽  
Chromosome Numbers ◽  
North American Species ◽  
Basic Chromosome ◽  
The Family

Chromosome numbers are given for a number of North American species in the genera Draba, Erophila, and Erysimum. New basic chromosome numbers are suggested for North American species of Draba and Erysimum and it is suggested that Erysimum inconspicuum reproduces by agamospermy.

NORTH AMERICAN WATER MITES OF THE FAMILY MOMONIIDAE VIETS (ACARI: ARRENUROIDEA). II. REVISION OF SPECIES OF MOMONIA HALBERT, 1906

1989 ◽  
Vol 121 (11) ◽  
pp. 965-987 ◽  
Author(s):  
Ian M. Smith
Keyword(s):  
Life History ◽  
North American ◽  
North American Species ◽  
Water Mites ◽  
The North ◽  
The Family ◽  
New Diagnosis ◽  
First Time

AbstractThe North American species of Momonia Halbert, 1906, are revised. Larvae, deutonymphs, and adults of Momonia campylotibia sp.nov. are described, adults of Momonia marciae Habeeb and Momonia projecta Cook are redescribed, and deutonymphs of M. projecta are described for the first time. New morphological, life history, and distributional data are presented for all species. A new diagnosis of Momonia is proposed, and a key to adults of all known species of the genus is included.

NORTH AMERICAN WATER MITES OF THE FAMILY CHAPPUISIDIDAE MOTAS AND TANASACHI (ACARI: ARRENUROIDEA)

1992 ◽  
Vol 124 (4) ◽  
pp. 637-723 ◽  
Author(s):  
Ian M. Smith
Keyword(s):  
North America ◽  
North American ◽  
Freshwater Ecosystems ◽  
North American Species ◽  
Western North America ◽  
Adult Males ◽  
Early Tertiary ◽  
The Family ◽  
The Impact ◽  
First Time

AbstractMorphological and distributional data are presented for North American species of the family Chappuisididae, including members of the genera Chappuisides Szalay (subfamily Chappuisidinae), Uchidastygacarus Imamura (subfamily Uchidastygacarinae), and Morimotacarus Imamura and Yachatsia Cook (subfamily Morimotacarinae). The phylogenetic relationships of mites in these subfamilies with other Arrenuroidea are discussed, leading to the conclusion that mites previously placed in the families Chappuisididae and Uchidastygacaridae Imamura probably represent a single, holophyletic group. As a result, the family Chappuisididae is redefined, and four subfamilies are recognized, namely Chappuisidinae, Uchidastygacarinae Imamura, Tsushimacarinae Cook, and Morimotacarinae Imamura. The name Uchidastygacaridae is placed in synonymy with Chappuisididae. New diagnoses are proposed for the family and subfamilies.Adults of Chappuisides eremitus Cook are redescribed, and adults of seven new species, namely C. anomalus sp.nov., C. neomexicanus sp.nov., C. acadianus sp.nov., C. cooki sp.nov., C. occidentalis sp.nov., C. californicus sp.nov., and C. oregonensis sp. nov., are described for the first time. Deutonymphs of C. acadianus, C. cooki, and C. occidentalis are also described. A new diagnosis is proposed for the genus Chappuisides and subgeneric concepts are reviewed critically.Adults of Uchidastygacarus (Imamurastygacarus) ovalis Cook, U. (s.s.) imamurai Cook, and U. (s.s.) acadiensis Smith are redescribed, largely on the basis of recently collected specimens including the first known adult males of U. (I.) ovalis. Adult males of U. (s.s.) magnificus sp.nov., adult females of U. virginiensis sp.nov., and deutonymphs and adults of both sexes of U. appalachianus sp.nov. are described for the first time. New diagnoses are proposed for the genus Uchidastygacarus and its subgenera.Adults of Morimotacarus nearcticus sp.nov., the first known nearctic species of the genus, are described and adults of Yachatsia mideopsoides Cook are redescribed. Deutonymphs of both of these species are described for the first time. The name Yachatsia euforma Habeeb is placed in synonymy with Y. mideopsoides based on study of type specimens and assessment of variability within populations. New diagnoses are proposed for the genera of Morimotacarinae.A phylogenetic framework for Chappuisididae is outlined and discussed. New distributional data are presented for North American species, permitting the first comprehensive attempt to assess the zoogeography of the family. The family probably differentiated from early derivative mideopsiform arrenuroid stock similar to Nudomideopsidae in Laurasia during the late Cretaceous or early Tertiary. Extant subfamilies apparently originated early in Tertiary times, and the clades that include modern genera dispersed throughout western North America and eastern Asia, and in some cases more extensively on both continents, between the early Tertiary and the Pleistocene. Climatic cooling in late Tertiary times, culminating in glacial episodes during the Pleistocene, resulted in displacement of chappuisidid taxa to various refugial areas south of continental ice sheets. Modern species are in the process of invading recently deglaciated areas in both eastern and western North America, but at differing rates that reflect their vagility, cold-tolerance, and ability to colonize newly established interstitial habitats. Chappuisididae have considerable potential value as indicators of the impact of environmental changes on interstitial freshwater ecosystems.

CHROMOSOME NUMBERS OF THE FAMILY CRUCIFERAE. I

1964 ◽  
Vol 42 (11) ◽  
pp. 1509-1520 ◽  
Author(s):  
Gerald A. Mulligan
Keyword(s):  
North America ◽  
Chromosome Numbers ◽  
Base Number ◽  
Thellungiella Salsuginea ◽  
The Family ◽  
Cakile Edentula ◽  
First Time

Chromosome numbers are given for 69 collections of 24 species of Cruciferae in the genera Alyssum, Arabidopsis, Arabis, Barbarea, Cakile, Eutrema, Hali-molobos, Nasturtium, Rorippa, Thellungiella, and Turritis. The following chromosome numbers are reported for the first time: Alyssum desertorum, n = 16; Arabis canadensis, 2n = 14; A. divaricarpa, 2n = 13 + 2B, 14, 20 + 2B, 21, 28; A. drummondii, 2n = 20; A. holboellii, 2n = 13 + 2B, 20 + 2B; A. lemmonii, 2n = 14; A. lyallii, 2n = 21; A. lyrata, 2n = 32; A. pendulocarpa, 2n = 14; Barbarea orthoceras, 2n = 16; Cakile edentula, 2n = 18; Rorippa curvisiliqua, 2n = 16; Thellungiella salsuginea, 2n = 14. It is concluded that species of Arabis native to North America and western Greenland have the base number x = 7 and many of them are apomictic whereas Eurasiatic species of this genus have an x = 8 base number and are sexual.

Chromosome numbers and the taxonomy of North American Agalinis (Scrophulariaceae)

1984 ◽  
Vol 62 (3) ◽  
pp. 454-456 ◽  
Author(s):  
Judith M. Canne
Keyword(s):  
Chromosome Number ◽  
North American ◽  
Chromosome Numbers ◽  
Base Number ◽  
Chromosome Counts ◽  
Base Chromosome Number ◽  
First Time

Chromosome counts are provided for 25 populations representing 18 species of Agalinis Raf. Chromosome numbers are reported for the first time for A. pinetorum, A. laxa, A. acuta, A. gattingeri, and A. skinneriana. The base chromosome number for section Linifoliae, section Heterophyllae, section Purpureae subsections Purpureae and Setaceae, and section Tenuifoliae is established at x = 14. Section Erectae and section Purpureae subsection Pedunculares have a base number of x = 13.

NORTH AMERICAN WATER MITES OF THE FAMILY MOMONIIDAE VIETS (ACARI: ARRENUROIDEA). III. REVISION OF SPECIES OF STYGOMOMONIA SZALAY, 1943, SUBGENUS ALLOMOMONIA COOK, 1968

1989 ◽  
Vol 121 (11) ◽  
pp. 989-1025 ◽  
Author(s):  
Ian M. Smith
Keyword(s):  
Life History ◽  
New Species ◽  
North American ◽  
North American Species ◽  
Water Mites ◽  
The Family ◽  
Two New Species ◽  
Species Groups ◽  
New Diagnosis ◽  
First Time

AbstractMorphological, life history, and distributional data are presented for North American species of the subgenus Allomomonia Cook, 1968. Adults of Stygomomonia (Allomomonia) moodyi Mitchell are redescribed, and deutonymphs and adults of four new species, S. (A.) pacifica, S. (A.) mendocinoensis, S. (A.) mitchelli, and S. (A.) atnarkicola, are described for the first time. Larvae tentatively identified as S. (A.) mitchelli are also described, and host associations of these, and larvae that appear to belong to other species of Stygomomonia, are presented and discussed. New distributional data are presented for all species. A new diagnosis of Allomomonia is proposed, two new species groups, the moodyi and mitchelli groups, are proposed and diagnosed, and a key to adults of North American species of the subgenus is included.

THE NORTH AMERICAN SPECIES OF MASSALONGIA AND GENERIC RELATIONSHIPS

1963 ◽  
Vol 41 (9) ◽  
pp. 1331-1346 ◽  
Author(s):  
Aino Henssen
Keyword(s):  
North American ◽  
Systematic Position ◽  
North American Species ◽  
New Combination ◽  
General Survey ◽  
The North ◽  
The Family ◽  
Generic Relationships

The systematic position of the genus Massalongia and the closely related genera Koerberia, Vestergrenopsis, and Placynthium in the family Peltigeraceae including lichens with hemiangiocarpic apothecia is discussed. The ontogeny of a hemiangiocarpic apothecium is described briefly. A key for the determination of the genera is provided.A general survey is given for the morphology and anatomy of the genus Massalongia. The two species, M. carnosa and M. microphylliza, are described in detail. The new combination M. microphylliza is made.

A New Gunnel, Pholis clemensi, from the Coast of Western North America

1964 ◽  
Vol 21 (5) ◽  
pp. 933-939 ◽  
Author(s):  
Richard H. Rosenblatt
Keyword(s):  
British Columbia ◽  
New Species ◽  
North America ◽  
North American ◽  
North American Species ◽  
Western North America ◽  
The North ◽  
The Family ◽  
Juan De Fuca ◽  
A New Species

A new species, Pholis clemensi, referred to the family Pholidae, is named and described from 12 specimens taken in southern British Columbia waters and the Strait of Juan de Fuca. Pholis clemensi is compared with other members of the genus, and a key is given to the North American species.

Sign in / Sign up

Export Citation Format

Share Document