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PhytoKeys ◽  
2021 ◽  
Vol 183 ◽  
pp. 67-76
Author(s):  
Bruce Bartholomew ◽  
Kate E. Armstrong ◽  
Rong Li ◽  
Peter W. Fritsch

Perrottetia taronensis from the Dulong Jiang valley in northwestern Yunnan Province, China and the Babulongtan mountain range in northern Kachin State, Myanmar is here described as a new species of the Dipentodontaceae. It is the third species of the genus to be recognized for China and the first to be reported for Myanmar. It is similar to P. alpestriss.s. but differs by characters of its leaf margins, inflorescences, and fruit. The three subspecies of P. alpestris recognized by Hou in “Flora Malesiana” are here recognized as three distinct species, i.e., P. alpestris, P. moluccana, and P. philippinensis on the basis of differences in diagnostic characters and distribution. The report in the “Flora of China” of the Taiwan species P. arisanensis from Yunnan is determined to be incorrect due to misidentification of two specimens at KUN.


Phytotaxa ◽  
2021 ◽  
Vol 512 (2) ◽  
Author(s):  
MUHAMMAD IDREES ◽  
JULIAN M.H. SHAW

The genus Eriobotrya Lindley (1821: 96) (Rosaceae, Jussieu 1789), comprises of ca. 36 taxa in East Asia, Indochina, the Himalayas, Western Malaysia (Vidal 1965, Pham 2000, Kalkman 2004, Yang et al. 2005, Idrees et al. 2018). In the flora of China, 20 species were reported (Gu & Spongberg 2003, Yang & Lin 2007, Li et al. 2012, Ding et al. 2015), with a further three species (endemic) recently described from Yunnan, and Myanmar (Chen et al. 2020, Idrees et al. 2020, Kang et al. 2021). All species are trees or shrubs, and of economic importance for use as ornamentals, edible fruit or timber, as well as medicinal plants (Seth 2003).


PhytoKeys ◽  
2021 ◽  
Vol 179 ◽  
pp. 29-33
Author(s):  
Jun Wen ◽  
Zhi-Yao Ma

This study reports the recognition of Vitis adenoclada Hand.-Mazz. from southern China. The species was not recognized in the Flora Reipublicae Ropularis Sinicicae and Flora of China treatments. Recent field studies and examination of herbarium collections including the type material suggest that Vitis adenoclada is morphologically similar to V. heyneana, in their densely arachnoid tomentose abaxial leaves, yet it can be easily distinguished from the latter by its red-purple glandular hairs on the young branches (vs. glandular hairs absent in V. heyneana) and inflorescences usually subtended by a tendril at the base (vs. only occasionally with a tendril in V. heyneana). Vitis adenoclada may be a species of hybrid origin, with the highly tomentose Vitis heyneana as one of the parental species, and likely the glandular-hair bearing V. davidii as the other parental species. Vitis adenoclada is recorded from southern China in Guangdong, Guangxi, Guizhou, Hunan and Zhejiang provinces.


2021 ◽  
Author(s):  
Ji-Dong Ya ◽  
Ting Zhang ◽  
Tirtha Raj Pandey ◽  
Cheng Liu ◽  
Zhou-Dong Han ◽  
...  
Keyword(s):  

PhytoKeys ◽  
2021 ◽  
Vol 178 ◽  
pp. 71-80
Author(s):  
Bine Xue ◽  
Gang-Tao Wang ◽  
Xin-Xin Zhou ◽  
Yi Huang ◽  
Yi Tong ◽  
...  

Artabotrys pachypetalussp. nov. is described from Guangdong, Guangxi, Guizhou, Hunan and Jiangxi in China. A detailed description, distribution data, along with a color plate and a line drawing are provided. In China, specimens representing this species were formerly misidentified as A. multiflorus or A. hongkongensis (= A. blumei). Artabotrys blumei typically has a single flower per inflorescence, whereas both Artabotrys pachypetalus and A. multiflorus have multiple flowers per inflorescence. In addition, A. pachypetalus is readily distinguished from A. multiflorus in having thicker and shorter petals, and connivent and somewhat trigonal or terete inner petal blades. Artabotrys pachypetalus is most similar to A. punctulatus because both have multi-flowered inflorescences and similar petal length, but A. pachypetalus differs in having cream petals in vivo, connivent inner petal blades, and a short, raised rim above the inner petal claw. Artabotrys multiflorus should be excluded from the flora of China because none of the Chinese specimens of Artabotrys collected so far fall within the variation of A. multiflorus.


Phytotaxa ◽  
2021 ◽  
Vol 501 (1) ◽  
pp. 151-161
Author(s):  
ER-HUAN ZANG ◽  
MING-XU ZHANG ◽  
WEN-LE WANG ◽  
CHUN-HONG ZHANG ◽  
MIN-HUI LI

In May 2020, a new taxon of Euphorbia, Euphorbiaceae was collected from a dry hillside of Dongsheng District, Ordos City, Inner Mongolia. The morphological characteristics of the specimens analyzed differ from those of the known Euphorbia species from this region; therefore, we suspected this may be a new species, and we set to analyze the ITS2 sequences of some Euphorbia species. The results show that the new taxon belongs to the sect. Esula of Euphorbia subg. Esula. It is similar to Euphorbia esula (description from Flora of China) but does not belong to the same species. Concomitantly, plant morphological data and pollen morphology results show significant differences between the new taxon, E. esula and E. caesia, a finding that supports the delimitation of this new taxon, which is named Euphorbia mongoliensis in accordance with its geographical distribution.


PhytoKeys ◽  
2021 ◽  
Vol 177 ◽  
pp. 63-75
Author(s):  
Qianqian He ◽  
Runan Zhao ◽  
Anguo He ◽  
Zunling Zhu ◽  
Yihua Tong

Carpinus polyneura and C. dayongina are recognised as separate species in Flora of China. In this study, the results of an examination of literature, morphological comparison and phenetic clustering of nuclear ITS sequences suggest that C. dayongina is conspecific with C. polyneura. Thus, we propose reducing C. dayongina to a synonym of C. polyneura.


Phytotaxa ◽  
2021 ◽  
Vol 497 (1) ◽  
pp. 29-38
Author(s):  
ZHU-QIU SONG ◽  
BO PAN ◽  
BING LI ◽  
DONGXIAN XU ◽  
SHIJIN LI

Millettia lantsangensis Z.Wei was described within the tribe Millettieae on the basis of one fruiting and two flowering gatherings from Yunnan Province, China. Our critical examination shows that these gatherings are mixed and represent two distinct species from two different tribes. The fruiting specimens have woody branches, terminal infructescences and inflated pods, closely resembling Callerya sphaerosperma (Z. Wei) Z. Wei & Pedley from the same tribe, while the flowering collections have soft and herbaceous branches, axillary pseudoracemes and wart-like brachyblasts, and belong to Cruddasia insignis Prain from the tribe Phaseoleae. Because one of the flowering specimens was indicated as the type of Millettia lantsangensis, this is here reduced to a synonym of Cruddasia insignis. The genus Cruddasia Prain was previously reported only from Myanmar and Thailand, and is therefore a new genus record for the flora of China.


2021 ◽  
Author(s):  
Julissa Rojas-Sandoval

Abstract Genetics: The chromosome number reported for C. citratus is 2n = 40 (Flora of China, 2016). Reproductive biologyIn most places Cymbopogon citratus flowers very rarely or not at all. It mostly reproduces vegetatively (Oyen, 1999). Physiology and phenology: In China, C. citratus has been recorded flowering and fruiting during summer (Flora of China, 2016). Longevity: Cymbopogon citratus has a life-span of 4-6 years (Oyen, 1999). Environmental requirements: Cymbopogon citratus grows best under sunny, warm and humid conditions at elevations below 750 m, with mean annual temperatures ranging from 23°C to 30°C and mean annual rainfall between 2500-3000 mm. It is adapted to grow on a wide variety of soils types, but prefers well-drained soils with pH ranging from 5.5 to 7.5. However, this species has been recorded growing in Australia on clay soils with pH=9.6. It does not tolerate saline soils or frosty conditions (Oyen, 1999).


2021 ◽  
Author(s):  
Julissa Rojas-Sandoval

Abstract Genetics: The chromosome number reported for C. ternatea varies from 2n = 14 to 2n = 16 (Gandhi and Patil, 1993; Flora of China Editorial Committee, 2016). Breeding system: Flowers of C. ternatea are cleistogamous, but a small level of outcrossing occurs and most flowers are self-pollinated. In the wild, flowers are visited by insects, primarily bees (Staples, 1992). Physiology and Phenology: C. ternatea is a perennial climbing, scrambling or trailing herb with a strong woody rootstock. Individual plants may live for several years and grow into large vines if undisturbed. C. ternatea shows epigeal germination. The radicle emerges within 48-72 hours and seedlings emerge in 3-6 days. Early growth is rapid in warm moist conditions. This fast-growing herb can cover the ground in 4-6 weeks when sown at a population of 4 plants/m2 (Staples, 1992; Cook et al., 2005). Growth of established plants is mostly from the apices of the main axis and axillary branches; very few new shoots arise from ground level. Growth is more or less continuous in the tropics (Staples, 1992; Cook et al., 2005).In China, C. ternatea has been recorded flowering and fruiting from June to November (Flora of China Editorial Committee, 2016). In Panama, it has been collected with flowers in February, April, July, August and November (Flora of Panama, 2016). In Costa Rica, flowering can occur throughout the year (Missouri Botanical Garden, 2016). Pods mature in 8-10 weeks after flowering and break readily once fully dry. Hand-harvested seed often remains hard-seeded for a long time and requires scarification prior to sowing. Mechanical abrasion, hot water or sulphuric acid can be used to break this dormancy (Staples, 1992; Cook et al., 2005; FAO, 2016). Associations: As with other nitrogen-fixing legumes, C. ternatea has a symbiotic relationship with Rhizobium bacteria (Cook et al., 2005). In cultivation, C. ternatea has been grown successfully with Pennisetum purpureum, Digitaria eriantha, Andropogon gayanus, Dichanthium aristatum, Cenchrus ciliaris, Chloris gayana, Sorghum bicolor, and Megathyrsus maximum (Cook et al., 2005). Environmental Requirements: C. ternatea prefers to grow in humid and sub-humid habitats at elevations from sea level to 1600-1800 m and mean annual temperature ranging from 15 to 28°C (Staples, 1992). It is adapted to a wide range of soil types from sandy to deep alluvial loams and heavy clays with pH ranging from 5.5 to 8.9 (McCosker and Osten, 1999; FAO, 2016). This species shows drought tolerance and it is able to grow in dry and semiarid habitats with annual rainfall ranging from 500 to 900 mm and survive for up to 5-6 months with only 400 mm of rainfall. C. ternatea also shows moderate frost tolerance and some tolerance to salinity conditions. This species does not tolerate flooding or waterlogging. It is normally grown in full sunlight but moderately shade-tolerant (Staples, 1992; Cook et al., 2005; FAO, 2016).


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