Amischotolype balslevii Boonsuk, Chantar. & Kantachot (2024: 50)

Boonsuk, Boonchuang, Kantachot, Chortip & Chantaranothai, Pranom, 2025, A synopsis of Amischotolype (Commelinaceae) in Thailand, with a new record, A. gracilis, Phytotaxa 716 (3), pp. 175-188 : 182

1. Amischotolype balslevii Boonsuk, Chantar. & Kantachot (2024: 50) ( Figure 1A–D ).

Type: — THAILAND, Udon Thani, Ban Dung district, Ban Dung subdistrict, 19 Jul. 2021, Boonsuk 896 ( holotype: KKU!; isotypes: AAU!, QBG!) .

Thai specimens examined:— THAILAND. NORTH-EASTERN: Loei: Na Haeo, 20 Jun. 1995, Nanakorn et al. 3805 ( QBG!). Udon Thani: Ban Dung, Ban Dung subdistrict, 19 Jul. 2021, Boonsuk 896 ( AAU!, KKU!, QBG!) ; ibidem, 25 Apr. 2022, Boonsuk 935 ( AAU!, KKU!, QBG!) ; Bueng Kan, 9 Sep. 2023, Boonsuk 967 ( KKU!). Nakhon Phanom: Phu Langka NP, Tat Kham Waterfall, 25 Aug. 2001, Pooma et al. 2619 ( BKF!). SOUTH-EASTERN: Chon Buri: Khao Khiao Open Zoo, 9 Sept. 2000, Phengklai et al. 12932 ( BKF!). Chanthaburi: Khao Khitchakut NP, Krathing Waterfall, 7 Jun. 2000, Thitimetharoch 331 ( BKF!, KKU!) ; Nam Tok Phlio NP, Phlio Waterfall , 4 Apr. 1971, Maxwell 71-251 ( BK!) ; ibidem, 26 Mar. 1972, Maxwell 72-155 ( AAU!, BK!) ; ibidem, 13 Oct. 1972, Maxwell 72-317 ( AAU!, BK!) .

Distribution.— Thailand, Laos.

Ecology.—Along open streams, near waterfalls, in moist exposed areas in gallery forest or disturbed evergreen forest, 100–300 m alt.

Vernacular name.—Muang si udon ( ม่วงศรีอุดร, Thai).

Notes.—This species is recognized by its glabrous leaf sheaths and sepals. Its capsules are purplish-white, ellipsoid, and longer than the sepals, which are the largest of any species in Thailand.

Figures

FIGURE 1. Amischotolype species in the field. A–D. A. balslevii. A. Habit and stems; B. Inflorescence and glabrous leaf sheath; C. Young inflorescence; D. Infructescence with purplish white capsules; E–I. A. divaricata. E. Stem and leaves; F. Young inflorescence; G. Infructescences; H. Inflorescence with an open flower; I. Infructescence with ripened capsules. Photographs by B. Boonsuk.