Strobilanthes erecta C. B. Clarke

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

10. Strobilanthes erecta C. B. Clarke , Bot. Jahrb. Syst. 41 (2): 67. 1907.

Fig. 10 D

Goldfussia laotica Bremek. , Proc. Kon. Ned. Akad. Wetensch. C 60: 3. 1957. Type: Laos, Xieng Khouang, Vidal 1685 (holotype U [ U 0000028!]; isotype P [ P 04366109 image!]).

Strobilanthes suborbicularis J. B. Imlay , Bull. Misc. Inform. Kew 1939 (3): 118. 1939. Type: Thailand. Chiang Mai, Doi Inthanon [Doi Aang Ka], 2 Nov 1930, Put 3302 (lectotype K n. v. designated by Son et al. (2018); isolectotypes ABD [ ABDUH: 2 / 914 image!], BK [257647!], BM [ BM 000906322!], C [ C 10005219 image!], KYO!).

Dossifluga suborbicularis (J. B. Imlay) Bremek. , Verh. Kon. Ned. Akad. Wetensch., Afd. Natuurk., Sect. 2. 41 (1): 235. 1944. Type based on Strobilanthes suborbicularis J. B. Imlay

Type.

Thailand, Doi Chiang Dao, 17 Feb 1905, Hosseus 401 a (holotype M [ M 0168696 image!]; isotype P [ P 00719317 image!]).

Distribution.

Myanmar, China, Thailand, Laos, Vietnam.

Ecology.

In open hill evergreen scrub and pine forest on mountain top, sandy soil, limestone or granite bedrock; 980–2,200 m alt., flowering and fruiting from September to February.

Selected specimens examined.

Thailand, Northern: Chiang Mai, Doi Chiang Dao WS, 2,160 m alt., 17 Feb 1905, Hosseus 401 a ( M, P); ibid., 1,500 –2,200 m alt., 3 Dec 1961, Smitinand & Anderson 7305 ( BKF- 2 sheets); ibid., 2,000 m alt., 7 Dec 1965, Hennipman 3273 ( BKF, L); ibid., Chom Thong, Doi Inthanon NP, 2 Nov 1930, Put 3302 ( ABD, BM, C, K); ibid., 1,800 m alt., 18 Feb 1999, Suksathan 1572 ( QBG); ibid., 1,700 m alt., 22 Sept 2001, Suksathan 3087 ( QBG); ibid., 19 Nov 2020, Kladwong 532 & 533 ( KKU); Nan, Doi Phu Kha NP, Doi Phu Wae, 1,700 m alt., 10 Dec 1998, Srisanga 412 ( AAU, BKF, CMUB, KYO, QBG); North-eastern: Loei, Phu Luang WS, 1,300 m alt., 27 Nov 1959, Bunpheng 955 ( BKF); ibid., 1,500 m alt., 3 Jan 1983, Niyomdham & Vidal 442 ( AAU, BKF- 2 sheets, P) & 501 ( AAU, BKF- 2 sheets, P); ibid., 1,400 m alt., 15 Apr 1968, Chermsirivathana 872 ( BK); ibid., 1,500 m alt., 26 Jan 1981, Smitinand s. n. ( BKF); ibid., 19 Nov 2019, Kladwong 501 ( KKU).

Preliminary conservation status assessment.

This species has an Extent of Occurrence ( EOO) of 312,285.154 km 2 and an Area of Occupancy ( AOO) of 44.000 km 2 and is assessed as Least Concern ( LC) following IUCN (2022).

Notes.

Strobilanthes erecta resembles S. phyllocephala J. R. I. Wood & Scotland in the shape of its leaf base, but it differs in having ovate-elliptic or obovate and caducous bracts. Wood and Scotland (2006) treated S. laotica as a synonym of S. dimorphotricha subsp. rex , but after investigation of type specimens we found that this species is conspecific with S. erecta . This is corresponded with the report of Son et al. (2018).

Son et al. (2018) proposed the duplicate of Put 3302 from K (without barcode) as the lectotype of S. suborbicularis . Unfortunately, we have not seen this duplicate. Moreover, they also provided a picture of the lectotype, but we found that this picture is the sheet BM 000906322 at BM, not K: the citation of K may therefore be in error. We were able to locate five duplicates of Put 3302 one deposited at each of ABD [ ABDUH: 2 / 914], BK [257647], BM [ BM 000906322], C [ C 10005219] and KYO.

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.