Corresponding author: Ming Tang (
Academic editor: A. Sukhorukov
A new species of
Li Z, Zheng H-L, Tang M (2020)
During an expedition to Panzhou, Guizhou Province, China in 2020, we found an unusual population of
Herbarium studies were conducted in GZAC, IBSC, JXAU, KUN, and PE. Field observations were made in Panzhou, Guizhou, China in August and September 2020.
China. Guizhou Province, Panzhou, Dazhai village, west of Luotuo valley, limestone mountains, 1803 m a.s.l., herbaceous tier in mixed forest,
Holotype of
Perennial herbs, erect, rhizomatous. Rhizome thick, horizontal. Vegetative stem solitary, erect, 20–35 cm, densely white or ferruginous setulose. Flowering stem solitary, erect, scapiform, 30–60 cm tall, shortly branching, fulvous tomentose. Leaves rosulate at the base of fertile shoot; petioles 1–1.5 cm long, not winged, slightly expanded at base; blades oblanceolate or obovate, 10–18 × 2.5–5 cm, papyraceous, abaxially sparsely arachnoid, glabrescent or subglabrous, adaxially scattered setulose, pinnately veined, lateral veins 12–16, arcuate-ascending, base cuneate, margin shallowly sinuate-apiculate or repand-apiculate, apex subacute-acuminate. Stem leaves on reproductive shoots few, narrowly lanceolate, remote, much smaller. Capitula discoid, numerous, arranged in an attenuate narrowly paniculoid thyrse; pedicels 3–5 mm, fulvous tomentose, 1- or 2- bracteate; bracts below capitula linear, 5–10 mm long. Involucres narrowly campanulate, 7–8 × 3–4 mm, calyculate; bracts of calyculus 3–5, ovate-oblong or lanceolate, 1/4–1/3 as long as phyllaries; phyllaries (7) 8, narrowly oblong, 2–3 mm wide, herbaceous, green, margin narrowly scarious, glabrous, not veined, apically triangular, obtuse. Ray florets absent. Disk florets 8–11; corolla yellow, 8–10 mm, with tube 7–8 mm long, limb narrowly funnelform, somewhat exserted from involucre; lobes oblong-lanceolate, 1–2 mm long, apically acute. Anthers 3.5–4 mm long, anther tails equaling anther-collars; appendages lanceolate; anther-collars balusterform, basally dilated. Style branches 1.8–2 mm long, covered with long marginal papillae and often with a central tuft not conspicuously longer. Achenes ca. 2 mm, glabrous. Pappus 8–10 mm long, red-purple.
Record of
Growing in mixed forest with other herbs in limestone mountains at an elevation of ~1800 m.
Flowering from late August to September; fruiting October.
The specific epithet is derived from Panzhou, the type locality of the species. The Chinese name is ‘盘州合耳菊 (Pan zhou he er ju)’.
As shown in Figs
Comparison of
Characters |
|
|
---|---|---|
|
densely white to ferruginous setulose | sparsely pubescent, glabrescent to glabrous |
|
1–1.5 cm | petiole 1–2.5 cm |
|
adaxially green or purple | adaxially green |
|
fulvous tomentose, not glabrescent | thinly tomentose, glabrescent |
|
7–8 × 3–4 mm | 5–6 × 2–2.5 mm |
|
(7) 8, 7–8 × 2–3 mm, green, not veined | 5, 5–6 × 1–1.5 mm, white, apex green, conspicuously 3–5-veined |
|
8–11, deep yellow, lamina yellow | 4–5, yellowish, lamina yellow-whitish, apex green when young |
|
red-purple | yellow-whitish |
|
ca. 2 mm long | ca. 4 mm long |
|
red-purple | white |
From all other species of
Morphologically, following the characters and delimitation of
We are grateful to Dr. Alexander P. Sukhorukov, Dr. Timothy M. A. Utteridge and two anonymous reviewers for their helpful comments on how to improve our manuscript. We thank Dr. P. Li from Zhejiang University for his help in the field work, and the staff of IBSC, GZAC, JXAU, KUN and PE for allowing us to examine and use their scanned images of specimens. This work was supported by the National Science Foundation of China (grant No. 31960043), the Science and Technology Basic Resources Investigation Program of China “Survey and Germplasm Conservation of Plant Species with Extremely Small Populations in South-west China” (grant No. 2017FY100100), and also in part by the Research Projects of Introducing Talents in Guizhou University (grant No. Gui Da Ren Ji He Zi (2019)59).