Strobilanthes consors C. B. Clarke

Kladwong, Pornchai & Chantaranothai, Pranom, 2024, Notes on Strobilanthes (Acanthaceae) with capitate inflorescences in Thailand, PhytoKeys 244, pp. 89-126 : 89-126

6. Strobilanthes consors C. B. Clarke , Bot. Jahrb. Syst. 41 (2): 66. 1907.

Fig. 10 B

Type.

Thailand, Chiang Mai, Doi Suthep, 13 Dec 1904, Hosseus 256 (lectotype M [ M 0168698 image!] designated here; isolectotypes B [ B 101185735 image!], BM [ BM 000906339!], E [ E 00273462!], K [ K 001514905!], L [ L 2841550!], P [ P 00719278 image!]).

Distribution.

Chamchumroon, Myanmar, Thailand.

Ecology.

In evergreen forest, granite bedrock; 250–2,500 m alt., flowering and fruiting from September to May.

Selected specimens examined.

Thailand, Northern: Mae Hong Son, Mae Tala, 1,376 m alt., 28 Apr 2014, Norsaengsri 10909 ( QBG); Chiang Mai, Doi Inthanon NP, Doi Ang Ka, 1,600 malt., 26 Dec 1935, Garrett 1026 ( BKF, K- 2 sheets, KYO); ibid., Fang, Doi Pha Hom Pok NP, 1,900 –2,000 m alt., 11 May 1905, Hosseus 606 ( M); ibid., Doi Suthep-Pui NP, 13 Dec 1904, Hosseus 256 ( B, BM, E, K, L, M, P); ibid., ca. 1,680 m alt., 10 Jan 1911, Kerr 2279 ( BM, K- 2 sheets, L, TCD); ibid., ca. 1,520 m alt., 24 Dec 1911, Kerr 2279 A ( BM- 2 sheets, E, L, TCD); ibid., ca. 1,580 m alt., 22 Sept 1912, Kerr 2715 ( AAU, BM- 2 sheets, E, K); ibid., 1,510 m alt., 20 Dec 2009, Balslev et al. 10029 ( AAU); Nan, Bo Kluea, Sapan Waterfall, 600 m alt., 17 Nov 1993, Larsen et al. 44464 ( AAU); ibid., 780 m alt., 2 Sept 2000, Srisanga 1587 ( BKF, QBG, CMUB); Chiang Rai, Doi Chang, 1,260 –1,765 m alt., 11 Jan 1922, Rock 1771 ( E, US); Lamphun, Mae Tha, Doi Khun Tan NP, 1,200 m alt., 20 Nov 1993, Maxwell 93-1407 ( BKF- 2 sheets, CMUB, L); Lampang, Chae Son NP, 875 m alt., 24 Oct 1995, Maxwell 95-991 ( BKF, CMUB); ibid., Doi Luang NP, 1,125 m alt., 8 Nov 1998, Petrmitr 335 ( CMUB, L); North-eastern: Loei, Phu Kradueng NP, 1,250 m alt., 9 Sept 1988, Takahashi & Tamura 63463 ( BKF); ibid., Phu Luang WS, 1,150 –1,530 m alt., 24 Dec 1982, Koyama et al. 31617 ( KYO- 2 sheets); ibid., Phu Ruea NP, 980–1,151 m alt., 23 Dec 1982, Koyama et al. 31543 ( BKF, KYO).

Preliminary conservation status assessment.

This species has an Extent of Occurrence ( EOO) of 73,029.391 km 2 and an Area of Occupancy ( AOO) of 76.000 km 2 and is assessed as Least Concern ( LC) following IUCN (2022).

Notes.

Hosseus 256 and Hosseus 606 were cited in the original protologue of S. consors ( Hosseus 1907) . Hosseus 256 has seven duplicates one in each of B [ B 101185735], BM [ BM 000906339], E [ E 00273462], K [ K 001514905], L [ L 2841550], M [ M 0168698] and P [ P 00719278] whereas Hosseus 606 has only one duplicate deposited at M [ M 0168699]. M 0168698 has the original label “ Strobilanthes consors sp. nova. ” and the original description in Clarke ’ s handwriting. Moreover, this specimen has mature leaves, inflorescences and flowers. We, therefore, select the sheet M 0168698 as the lectotype of S. consors .

Figures

Figure 10. Distribution maps of Strobilanthes with capitate inflorescence in Thailand A S. aprica (Hance) T. Anderson, S. articulata J. B. Imlay and S. brandisii T. Anderson B S. capitata (Nees) T. Anderson, S. chiangdaoensis Terao and S. consors C. B. Clarke C S. cruciata (Bremek.) Terao, S. dimorphotricha subsp. rex (C. B. Clarke) J. R. I. Wood and S. echinata Nees D S. erecta C. B. Clarke, S. esquirolii H. Lév. and S. falconeri T. Anderson.