Pomatosace

Pomatosace filicula is a species of flowering plant in the family Primulaceae, endemic to the Qinghai–Tibetan Plateau in China.

Pomatosace filicula
Scientific classification
Kingdom:
Plantae
(unranked):
Angiosperms
(unranked):
Eudicots
(unranked):
Asterids
Order:
Ericales
Family:
Primulaceae
Genus:
Pomatosace

Species:
P. filicula
Binomial name
Pomatosace filicula

Description

Pomatosace filicula is a biennial plant that grows from rosettes of basal leaves, each 15–90 millimetres (0.6–3.5 in) long and 6–15 mm (0.2–0.6 in) wide and divided into lobes along its length;[1] the leaves may be reminiscent of a fern, providing the species' epithet, filicula (diminutive of Latin filix, "fern"). The flowers are borne in umbels of 3–12 flowers on a stalk 1–16 centimetres (0.4–6.3 in) tall. Each flower is white, with five petals fused into a tube for around 2 mm (0.08 in). Seeds are produced in a capsule, which is approximately 4 mm (0.16 in) wide.[1]

Distribution and ecology

Pomatosace filicula is only found in the north-eastern part of the Qinghai–Tibetan Plateau,[2] in the Chinese provinces of Sichuan, Xizang (Tibet) and Qinghai.[1] It grows in a variety of habitats, including alpine meadows and sand flats along rivers, at altitudes of 2,800–4,500 metres (9,200–14,800 ft).[1] It flowers from May to June, and fruits from June to August.[1] It is thought to have evolved to inhabit the open ground in front of the burrows of plateau pikas (Ochotona curzoniae) and other ground-dwelling mammals.[2]

Taxonomy

Pomatosace filicula is the only species in the genus Pomatosace, as described by Karl Maximovich in 1881. More recent molecular phylogenetic data have shown, however, that Pomatosace is nested within Androsace,[2] meaning that some taxonomic change is required to maintain monophyletic genera – either sinking Pomatosace into Androsace or splitting Androsace into a number of genera.[3]

References
  1. Qiming Hu & Sylvia Kelso (1996). "Pomatosace Maximovicz" (PDF). In Zhengi-yi Wu; Peter H. Raven (eds.). Myrsinaceae through Loganiaceae. Flora of China. 15. St. Louis, MO: Missouri Botanical Garden Press. pp. 39–189. ISBN 9780915279371.CS1 maint: uses authors parameter (link)
  2. Ga-Ni Wang, Xin-Yu He, Georg Miehe & Gang-Shan Mao (2014). "Phylogeography of the Qinghai–Tibet Plateau endemic alpine herb Pomatosace filicula (Primulaceae)". Journal of Systematics and Evolution. 52 (3): 289–302. doi:10.1111/jse.12089.CS1 maint: uses authors parameter (link)
  3. Gerald M. Schneeweiss, Peter Schönswetter, Sylvia Kelso & Harald Niklfeld (2004). "Complex biogeographic patterns in Androsace (Primulaceae) and related genera: evidence from phylogenetic analyses of nuclear internal transcribed spacer and plastid trnL-F sequences". Systematic Biology. 53 (6): 856–876. doi:10.1080/10635150490522566. JSTOR 4135374. PMID 15764556.CS1 maint: uses authors parameter (link)
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