Strobilanthes speciosa Blume

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

22. Strobilanthes speciosa Blume , Bijdr. Fl. Ned. Ind. 14: 799. 1826.

Fig. 11 D

Goldfussia speciosa (Blume) Bremek. , Verh. Kon. Ned. Akad. Wetensch., Afd. Natuurk., Sect. 2. 41: 227. 1944. Type: Based on Strobilanthes speciosa Blume.

Strobilanthes apoesensis Hochr. , Candollea 5: 228. 1934. Type: Indonesia, Mt. Salak, 7 Mar 1904, Hochreutiner 101 (syntype G [ G 00236511 image!]).

Strobilanthes kinabaluensis Stapf , Trans. Linn. Soc. London, Bot. 4: 214. 1894. Type: Malaysia, Sabah, Kadamaian River, Haviland 1362 (syntype K fide Bennett and Scotland 2003, pg. 40).

Goldfussia kinabaluensis (Stapf) Bremek. , Verh. Kon. Ned. Akad. Wetensch., Afd. Natuurk., Sect. 2. 41: 229. 1944. Type: Based on Strobilanthes kinabaluensis Stapf.

Strobilanthes pierrei Benoist , Bull. Soc. Bot. France 80: 730. 1934. Type: Thailand, Khao [Kow] Luang, Aug 1868, Pierre s. n. (lectotype P [ P 00218442 image!] designated here; isolectotypes A [ A 00286777 image!], P [ P 00719405 image!, P 00204977 image!], NY [00278319 image!]).

Type.

Indonesia, Megamendung, Blume 1802 (lectotype L [ L 0537293!] designated by Bennett and Scotland 2003, pg. 39).

Distribution.

China, Thailand, Laos, Cambodia, Malaysia, Indonesia.

Ecology.

Common in evergreen forest or on rugged limestone area, 100–2,150 m alt. Flowering and fruiting from August to March.

Selected specimens examined.

Thailand, Northern: Mae Hong Son, Khun Yuam, 1,000 m alt., 20 Nov 2014, Prommanut & Rattanathip 618 (BK- 4 sheets); Chinag Mai, Doi Chiang Dao WS, 1,500 m alt., 15 Sept 1967, Shimizu & Hutoh 10152 ( BKF, KYO- 2 sheets, L); ibid., Fang, Doi Ang Khang, 1,600 m alt., 17 Nov 1973, Sadakorn 289 ( BK); Chiang Rai, Doi Chang, 868 m alt., 28 Nov 2010, Norsaengsri & Tathana 7365 ( QBG); ibid., Mae Sai, 1,350 m alt., 4 Oct 1992, Banziger 1055 ( CMUB, L); Nan, Song Khwae, Bo Pra Kang, 657 m alt., 2 Feb 2011, La-ongsri et al. 2067 ( QBG, PSU); Lampang, Wang Nuea, Chae Son NP, 525 m alt., 25 Oct 1995, Maxwell 95-1006 ( BKF, CMUB, L); Tak, Doi Muser, 700 m alt., 27 Feb 1987, Paisooksantivatana 2029-87 ( BK); ibid., Phummipol Dam, Dec 1959, S. N. 675 ( BK); Sukhothai, Mueang Kao, 4 Nov 1971, Maxwell 71-677 ( AAU, BK); South-western: Phetchaburi, Kaeng Krachan NP, 210 m alt., 12 Dec 2002, Middleton 1588 ( BKF, CMUB, E); Prachuap Kiri Khan, Kaeng Krachan NP, 260 m alt., 15 Aug 2002, Middleton 1078 ( AAU, BKF, CMUB, E, L); ibid., Huai Yang, 6 Oct 1980, Put 3229 ( BK, K, KYO); Peninsular: Surat Thani, Phanom, Chong Lom, Khao Sok NP, 100–150 m alt., 12 Dec 1979, Shimizu et al. 27115 ( BKF, KYO- 2 sheets, L); Nakhon Si Thammarat, Kiriwong, 100 m alt., 28 Apr 1928, Kerr 15420 ( BK, BM, K); ibid., 100–700 m alt., 17 Jan 1966, Tagawa et al. 4545 ( BKF, KYO- 2 sheets, L); ibid., Khao [Kow] Luang, Aug 1868, Pierre s. n. ( A, NY, P- 4 sheets).

Preliminary conservation status assessment.

This species has an Extent of Occurrence ( EOO) of 250,984.816 km 2 and an Area of Occupancy ( AOO) of 64.000 km 2 and is assessed as Least Concern ( LC) following IUCN (2022).

Notes.

Pierre ’ s collection was cited in the protologue of S. pierrei ( Benoist 1934) . This collection has five duplicates, there are three at P [ P 00218442, P 00719405, P 00204977], one at A [ A 00286777] and one at NY [00278319]. All specimens bear Benoist ’ s handwriting as follows: “ Strobilanthes pierrei R. Benn. ”. However, P 00218442 has more leaves and inflorescences; therefore, it is selected as the lectotype. The others are isolectotypes.

Figures

Figure 11. Distribution maps of Strobilanthes with capitate inflorescence in Thailand A S. graminea J. B. Imlay, S. hypomalla Benoist and S. kerrii Craib B S. paniculiformis J. R. I. Wood, S. paniculata (Nees) Miq. and S. phengklaii Kladwong & Chantar. C S. phyllocephala J. R. I. Wood & Scotland, S. phyllostachya Kurz and S. serpens (Nees) J. R. I. Wood & Scotland D S. speciosa Blume and S. squalens S. Moore.