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| Sonerila lobbii (C.B.Clarke) J.Wai & J.-M.Hu, in Sae Wai & Hu, 2022. สาวสนมศรีประจิม || taiwania.NTU.edu.tw |
Abstract
Sonerila picta Korth. is a widespread and morphologically diverse species in the family Melastomataceae. Sonerila picta Korth. var. lobbii C.B.Clarke was first described from Myanmar. Later, it was lumped into the synonymy of S. parishii Stapf. Comprehensive observations of morphology as well as phenology have revealed that the herbarium specimens identified as S. picta var. lobbii are also clearly different from the typical S. picta. The syntypes of S. parishii including C.S.P.Parish 429 (K) and two sheets of T.Lobb s.n. (K) are found to belong to two distinct species. Based on this study, we elevate the variety to the status of species, as Sonerila lobbii (C.B.Clarke) J.Wai & J.-M.Hu. The description and illustration are provided. We here also select C.S.P.Parish 429 (K) as the lectotype of S. parishii and select one of the sheets of T.Lobb s.n. (K) as the lectotype of S. picta var. lobbii, basionym of S. lobbii (C.B.Clarke) J.Wai & J.-M.Hu.
Keyword: lectotypification, new combination, Sonerila parishii, Sonerila picta var. lobbii, taxonomy
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| Type specimen and additional specimen of Sonerila lobbii (C.B.Clarke) J.Wai & J.-M.Hu: Lectotype T.Lobb s.n. (K) (A), J.Wai 2604 (PSU) from Thailand (B-G). A, B: Habit, flowering shoots with leaves. C: Bracts, larger bract with hairs (left), smaller bract without hairs (right). D: Flower. E: Petal showing adaxial (left) and abaxial (right) sides. F: Stamen. G: Longitudinal section of a flower showing hypanthium, stigma, style and ovary. All drawn by P.Tippayasri |
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| Sonerila lobbii (C.B.Clarke) J.Wai & J.-M.Hu: A: Natural habitat. B: Habit. C: Flowering shoot. D: Stem indumentum showing long golden-brown or ferruginous hairs. E: Inflorescence and flowers. All taken by J.Sae Wai. |
Sonerila lobbii (C.B.Clarke) J.Wai & J.-M.Hu, comb. et stat. nov.
Diagnosis: Sonerila lobbii is similar to S. parishii
in having slender and terete stems, but differs in having
long golden-brown or ferruginous hairs covering all of
the surface (versus minute reddish brown glandular hairs
sometimes mixed with scattered long glandular hairs, the
indumentum covering 50–60% of the surface) and in
bearing relatively smaller leaves (1.2–4(–7) by 1–3.2 cm
versus larger leaves of 2.5–8 by 1.5–7 cm in S. parishii).
Sonerila lobbii can be distinguished from the typical S.
picta by its slender, terete or subterete stems (versus stout,
quadrangular stems); only terminal inflorescences (versus
terminal or axillary); relatively larger flowers: longer
petals (8–11.5 mm long versus shorter petals 6–7.5 mm
long in S. picta); longer anthers (8–9 mm vs shorter anthers
3–6.5 mm in S. picta); longer styles (13–16.5 mm versus
shorter styles 7–13 mm in S. picta). A detailed comparison
of S. lobbii, S. parishii, and S. picta is presented in Table 1.
Therefore, there is sufficient evidence to elevate S. picta
var. lobbii to the status of a species.
...
Vernacular name: Sao Sanom Si Prachim (สาวสนมศรีประจิม) (Suggested here).
Jarearnsak Sae Wai and Jer-Ming Hu. 2022. Sonerila lobbii comb. & stat. nov., A New Species segregated from S. picta Korth. and S. parishii Stapf., and Lectotypification of Two Names in the Genus Sonerila (Melastomataceae). Taiwania. 67(3); 435 - 440. DOI: 10.6165/tai.2022.67.435
