Strobilanthes falconeri T. Anderson

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

12. Strobilanthes falconeri T. Anderson , J. Linn. Soc., Bot. 9: 484. 1867.

Fig. 10 D

Type.

Myanmar, Moulmain, 27 Feb 1849, Falconer 423 (lectotype CAL [ CAL 0000019638 image!] designated here; isolectotypes CAL [ CAL 0000019639 image!], K [ K 000882995!]).

Distribution.

Myanmar, Thailand.

Ecology.

In evergreen forest; 250–1,300 m alt., flowering and fruiting from October to May.

Selected specimens examined.

Thailand, Northern: Mae Hong Son, Khun Yuam, Mae Yuam Noi, 800 m alt., 24 Mar 2009, Pongamornkul 2579 ( QBG); ibid., Mae Sariang, Mae Bow, 1,125 m alt., 2 Mar 1991, Maxwell 91-212 (AAU- 2 sheets, E, L); ibid., Sob Moei, 900 m alt., 29 Apr 2014, Pongamornkul 4165 ( QBG); Chiang Mai, Doi Inthanon NP, Doi Pha Tang, 1,300 m alt., 18 Jan 2009, Niyomdham & Puudjaa 8356 ( BKF); Tak, Umphang, Thung Yai Naresuan East WS, 22 Dec 2011, Watthana & La-ongsri 4100 ( QBG); South-western: Kanchanaburi, Sangklaburi, Khao Leam NP, 250 m alt., 16 Dec 2005, Poopath 421 ( BKF- 2 sheets); ibid., Khao Yai, 800–900 m alt., 2 Apr 1968, van Beusekom & Phengklai 302 ( AAU, BKF, E, K, L); Central: Nakhon Nayok, Khao Yai NP, 1,170 m alt., 9 Oct 1979, Shimizu et al. 18097 ( KYO- 2 sheets); ibid., 800 m alt., 29 Jan 2008, Maxwell 08-17 ( QBG, CMUB, L).

Preliminary conservation status assessment.

This species has an Extent of Occurrence ( EOO) of 69,009.843 km 2 and an Area of Occupancy ( AOO) of 36.000 km 2 and is assessed as Least Concern ( LC) following IUCN (2022).

Notes.

Falconer 423 was mentioned in the original protologue of S. falconeri ( Anderson 1867) . There are three duplicates two at CAL [ CAL 0000019638, CAL 0000019639] and one at K [ K 000882995]. All the specimens were labelled as “ Strobilanthes falconeri T. Anderson ” in Anderson ’ s handwriting. The sheet CAL 0000019638 has more leaves, inflorescences and fruits. Therefore, we select this specimen as the lectotype.

This species was formerly known only from Myanmar, but is now known from the Northern, South-Western and Central floristic regions of Thailand.

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.