Elsholtzia stachyodes (Link) Raizada & Saxena

Bongcheewin, B., Chantaranothai, P. & Paton, A., 2015, Elsholtzia (Lamiaceae) in Thailand, Blumea 59 (3), pp. 209-214 : 213

7. Elsholtzia stachyodes (Link) Raizada & Saxena — Fig. 1d

Elsholtzia stachyodes (Link) Raizada & Saxena (1966) 309; Press (1982) 70; X.W. Li & Hedge (1994) 251 as E. stachyodes (Link) C.Y. Wu (1974) 340; B.Bongcheewin & Chantar. (2008) 3.

Hyptis stachyodes Link (1822) 106. — Type: unknown. (Link’s herbarium is at B, probably destroyed.)

Aphanochilus incisus Benth. (1829) sub t. 1282. — Type: Wall . Cat. 1552 (syntype K (Herb. Benthamianum)), Myanmar, Taong Dong , 1826.

Elsholtzia incisa (Benth.) Benth. (1833) 162; Hook.f. (1885) 644; Mukerjee (1940) 89.

Perennial herb up to 1 m tall. Stems erect, yellow-brown, much branched, puberulent with densely pale yellow hairs curving downwards, glabrescent at base. Leaves rhomboid-ovate, 1.5– 4 by 1–3 cm, base attenuate, margin deeply serrate; upper surface glabrous with short pale yellow recurved hairs on venation; lower surface glabrous with densely translucent dots and recurved hairs on venation; petioles 30–50 mm long. Inflorescence terminal and axillary, lax, verticils from adjacent nodes not overlapping, c. 3 mm apart, cylindrical, 4–10 cm long; bracts linear, 1–2 by 0.1–0.2 mm; bracteoles linear. Calyx campanulate, 1–1.5 mm long at anthesis; tube slightly ventricose, 0.5–1 mm long, densely whitish pubescent with translucent dots outside, glabrescent inside; lobes subequal, triangular-subulate, 0.7–1 mm long. Corolla white or lilac, campanulate, 1.5–2 mm long; tube 1–1.2 mm long, sparsely hispidulous outside, glabrous without an annulus inside; lobes hispid outside, glabrescent inside; median lobe slightly emarginate; lower lip emarginate. Stamens 2, slightly exserted, glabrous. Style included. Nutlets 4, oblong-ovate, 0.8 mm long.

Distribution — India, Nepal, China, Myanmar, Thailand (N: Mae Hong Son, Chiang Mai; SW: Prachuap Khiri Khan; possibly introduced).

Vernacular name — Phak haan.

Ecology — Cultivated in home gardens, disturbed areas or open slopes in hill evergreen forest, 1000–1800 m altitude. Flowering and fruiting: November to February.

Specimens examined. Bongcheewin 939; Neamsuvan 87; Paisooksantivatana 2578­89; Sadakorn 364; Suddee et al. 2123; Tanaka et al. HN 8381; Thaithong 1157.

Note — All types of Link were at B and were largely destroyed. No material is present in B-W. Neotypification may be necessary .

Figures

Fig. 1 a. Elsholtzia griffithii Hook.f. b. E. kachinensis Prain, compact inflorescence form; c. lax inflorescence form; d. E. stachyodes (Link) Raizada & Saxena.