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| Spiradiclis yanii Y.Nong & L.Wu, in Nong, Lei, Wei, Qu, Zhao, Feng, Xu et Wu. 2204. 严氏螺序草 || DOI: 10.3897/phytokeys.247.123867 |
Abstract
Spiradiclis yanii Y.Nong & L.Wu (Rubiaceae), a new species from Guangxi, China, is described and illustrated. This new species is most similar to S. tomentosa, but it can be easily distinguished by being densely multicellular villous, leaves narrow elliptic or oblanceolate, apex acute or shortly acuminate, stipules 2–4, linear or linear lanceolate, 4–8 mm, densely villous, corolla tube 3 mm, sparsely pubescent inside, flower homomorphism, lobes 3–5, stamens arising at the base of the tube, stigma 2-lobed, lobes ovoid, slightly swollen, 0.2 mm. The habitat of Spiradiclis yanii is extremely fragile. Therefore, this species deserves close attention and protection.
Key words: Longan, limestone, new species, sinkhole, taxonomy
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| Spiradiclis yanii Y.Nong & L.Wu A, B plant (flowering and fruiting) C inflorescence (lateral view) D inflorescence (front view, corolla lobes 3–5) E flower (front view) F stamens, ovary and stigma G infructescence (lateral view) H calyx and bracts I capsule J seeds K leaf (adaxially view) L leaf (abaxially view) M, N stipules (Photographed by Ke-Jian Yan & You Nong, edited by You Nong). |
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| Habitat of Spiradiclis yanii Y.Nong & L.Wu on cliffs at the bottom of the sinkhole. Photographed by You Nong. |
Spiradiclis yanii Y.Nong & L.Wu, sp. nov.
Chinese name: yán shì luó xù cǎo (严氏螺序草)
Diagnosis: Spiradiclis yanii is most similar to S. tomentosa, but is different in being densely villous without knots (vs. densely grey-viscid multicellular tomentose); leaves narrow elliptic or oblanceolate (vs. oblanceolate, obovate or rarely elliptic); apex acute or shortly acuminate (vs. apex cuspidate to rounded); mid-vein flat adaxially and convex abaxially (vs. mid-rib and lateral veins nearly flat on both sides); stipules 2–4, linear or linear lanceolate, ...
Etymology: The new species is named after Mr. Ke-Jian Yan, who worked in Guangxi Institute of Chinese Medicine & Pharmaceutical Science and made many contributions to GXMI, especially in Rubiaceae and Lamiaceae.
You Nong, Li-Qun Lei, Gui-Yuan Wei, Xin-Cheng Qu, Zi-Yi Zhao, Bin Feng, Chuan-Gui Xu and Lei Wu. 2204. Spiradiclis yanii (Rubiaceae), A New Species from Guangxi, China. PhytoKeys. 247: 173-181. DOI: doi.org/10.3897/phytokeys.247.123867
