Paraphlomis koreana S.C.Ko et G.Y.Chung, 2014

Ko, Sung Chul, Lee, You-Mi, Son, Kyong-Sook Chung Dong Chan, Nam, Bo Mi & Chung, Gyu Young, 2014, A new species of Paraphlomis (Lamiaceae) from Korea: an additional genus to the Korean flora, Phytotaxa 175 (1), pp. 51-54 : 51-53

Paraphlomis koreana S.C.Ko et G.Y.Chung , sp. nov. ( Fig.1 A–I )

TYPE:― KOREA. Province Jeollanam-do: Wando-gun, Bogil-myeon ( Bogil-do Island ), Buyong-ri , Jeokjabong , 34.140°N, 126.551°E, 320 m, 3 June 2011 , G. Y. Chung and S. C. Ko 11060301 (holotype, HNHM; isotype, 5 sheets, KH, ANH).

Herbs with tuberoids, perennials; stems solitary, erect or somewhat ascending, 8–20 cm tall, branched occasionally, densely white villous. Leaves simple, leaf blades elliptic to ovate, 0.6–2.2 cm wide, 0.6–4.0 cm long, somewhat leathery, both adaxial and abaxial surfaces densely white villous, sparsely glandular, margins irregularly crenate or serrate, apices obtuse or rounded, bases acute, round or subtruncate; petioles 0.15–1.6 cm long, not winged. Inflorescences axillary, verticillasters 4–6-flowered; bracts leaf-like, present or absent, bracteoles lanceolate, ca. 0.5 cm long, fimbriate or ciliolate. Pedicels short to obsolete. Calyces obconical, 1.0– 1.2 cm long, densely fine strigose, conspicuously 10- veined, 5-cleft, equally toothed, narrowly triangular, accuminate, 0.5–0.6 mm long, puberulent. Corollas galeate, ca. 1.5 cm long, white, pink-spotted lower lips; tubes erect, cylindric, pilose; upper lips spatulate, slightly concave, entire, densely pilose outside; lower lips horizontally spreading, 3-lobed, middle lobes widely ovate, emarginated, undulate,

lateral lobes oblong, entire. Stamens 4, anterior 2 longer; filaments filiform, pubescent; anther cells 2, parallel. Style apices subequally 2-cleft, lobes subulate. Ovary apices truncate, glabrous. Nutlets oblong, ca. 0.2 cm long, triquetrous, glabrous. Fl. May–June. Fr. June–July.

Distribution and habitat:―Bogil-do Island (Pro. Jeollanam-do, South Korea). 320 m Alt. Forest.

Korean name:―Sokdanajaebi (¨ṉffiNjOi, ¨ṉffiNjOi¨).

Additional specimens examined:―No previous collections found.

Comparison:― Paraphlomis koreana is easily distinguished from other Paraphlomis species by small sized individuals and pink-spotted lower lips of corollas. Morphological characters of the species resemble P. albida Hand. - Mazz. (1936: 922), including the white corolla and obconical-shaped calyces. However, the new species lacks winged petioles, has lanceolate-shaped bracteoles, 10-veined calyces, and pink-spotted corollas, whereas P. albida possesses winged petioles, subulate-shaped bracteoles, 5-veined calyces, and lacks spotted corollas ( Table 1). P. formosana (Hayata 1906: 318) T.H.Hsieh & T.C.Huang (1995: 15) also has spots on corollas, but the species has lanceolate-shaped leaf blades with winged petioles and white or yellow-colored corollas. In common, the new species and P. lancidentata Y.Z.Sun (1935: 30) both have 10-veined, obconical-shaped calyces. However, P. lancidentata greatly differs in plant sizes and flower numbers per inflorescence, missing spots on corollas. Morphologically similar individuals to the new species have been collected in China, but spots on corollas are not observed in these plants (Chunlei Xiang, pers. comm.). Additionally, we failed to find any herbarium specimens and descriptions matching the newly named P. koreana from Bogil-do Island. Therefore, we report Paraphlomis koreana as a new, independent species. The species might be derived from P. albida distributed in middle China and Taiwan or a relict species. The species might have downsized as an adaptation to island environments.

Etymology:―The specific epithet of the new species refers to the originally observed locality and the endemism in Korea.

Phenology:―Flowering in May to June; fruiting in June to July.

Figures

FIGURE 1. Paraphlomis koreana S.C.Ko et G.Y.Chung. A. Habit. B. Leaf (adaxial surface). C. Magnified adaxial leaf surface (multicellular and pellucid glandular trichomes). D. Stem (squared cross-section surface). E. Corolla. F. Open calyx (abaxial). G. Open corolla. H. Pistil. I. Nutlet. Drawn from the holotype G. Y. Chung and S. C. Ko 11060301 (HNHM).