268 
Card. Bull. Singapore 69(2) 2017 
K); Keng Um Kong, Mae Ping Rapids, 250 m, 24 Nov 1920, Kerr, A.F.G. 4651 (BM, K, BK). 
Kanchanaburi: Ban Wangpho, 15 Oct 1967, Chermsirivathana, C. 791 (BK); Thong Pha 
Phum Pha Tad National Park, 130 m, 6 Sep 2007, Suddee, S. et al 3268 (BKF); Thong Pha 
Phum, 22 Aug 2006, Triboun, P. 3635 (E); ibidem, 130 m, 15 Sep 2006, Suddee, S. et al. 2854 
(BKF); ibidem, 240 m, 29 Nov 1982, Koyama, H. et al T-30467 (BKF); Thong Pha Phum, 
Wat Tham Mong Kala, 5 Oct 2015, Puglisi, C. et al CP409 (SING); Thong Pha Phum, Wat 
Tha Khanun, 170 m, 28 Oct 2009, Middleton, D.J. & Triboun, P 5204 (BKF, E); Thong Pha 
Phum, Cha Lae, Ban Kroeng Krawia, 20 Sep 2011, Sirimongkol, S. 226 (BKF, SING), S. 227 
(BKF); Erawan Waterfall, c. 150 m, 10 Oct 1971 ,Murata, G. etal T-16141 (BKF, L); Mahidol 
University Campus, 4 Oct 2015, Puglisi, C. et al CP402 (BKF); Sai Yok, Mahidol University 
Campus, 275 m, 13 Sep 2005, Maxwell, J.F. 05-489 (BKF, CMUB); Srisawat, Erawan National 
Park, 100-300 m, 3 Nov 1979, Shimizu, T. et al T-21532 (BKF); Erawan National Park, 400 
m, 18 Nov 1971, van Beusekom, C.F. et al 3843 (L); Sai Yok, Khao Yen, 7 Oct 2015, Puglisi, 
C. et al CP430 (BKF, E, MUKA, SING). Lampang: Ngao, near Tham Pha Thai, 520 m, 
24 Sep 2014, Middleton, D.J. et al. 4585 (BKF, E). Satun: Tarutao Island, 30 m, Oct 1979, 
Congdon 9 (E); Tha Lea Ban National Park, 250 m, 8 Dec 1986, Niyomdham, C. 1297 (BKF, 
E, K, P); Khuan Doan Khao Mot Oaeng, 456 m, 5 Sep 2013, Suddee, S. et al 4574 (BKF); La- 
ngu, Koh Kabeng, under 80 m, Sep 1999, Phengklai, C. 12152 (BKF); Cult. Aberdeen from a 
Kerr collection in Satul, 27 Nov 1927, “785” (ABD); Cult. Aberdeen from a Kerr collection in 
Satul, 6 Nov 1927, “785” (ABD). Tak: Umphang, Umphang Wildlife Sanctuary, 860 m, 16 Oct 
2014, Middleton, D.J. et al 5721 (BKF, E); Tali Song Yang, Tham Usu, c. 500 m, 10 Sep 2009, 
Middleton, D.J. & Triboun, P. 4836 (BKF, E, P); Umphang, Umphang Wildlife Sanctuary, 868 
m, 16 Oct 2014, Middleton, D.J. et al 5711 (BKF, E). Trang: Huay Yot, Wat Tham Iso, 102 m, 
9 Sep 2008, Middleton, D.J. et al. 4424 (BKF, E); Nam Tai, 11 Oct 1970, Charoenphol, C. et 
al. 3628 (AAU, BKF, E, K, L); Khao Pma, 150 m, 23 Oct 1991, Larsen, K. et al. 42504 (BKF); 
Palien, Lipang, Ban Tahkao, 50 m, 21 Nov 1986, Maxwell, J.F. 86-957 (CMU, L). Trat: Klong 
Kloi, Kaw Chang, 30 m, 30 Sep 1924, Kerr, A.F.G. 9260 (ABD [4 sheets], E, K). 
Notes. Thai specimens from south of the Isthmus of Kra have leaves with longer 
petioles, more strongly serrate margin and more acuminate apex, and inflorescences 
less hairy on pedicels and bracts. Wood (1974) attributed some Thai specimens to 
Microchirita caerulea (R.Br.) Yin Z.Wang, an Indonesian species with a bracteate 
inflorescence. Microchirita caerulea has glandular hairs intermixed with eglandular 
hairs in the stem. The bracts are fused on one side only and have glandular and 
eglandular hairs along the margin. The peduncles have a mixed indumentum, too, and 
the pedicels are glandular. Microchirita rupestris does not have any glandular hairs. 
Furthermore, the leaf base is cordate in Microchirita caerulea and only very rarely so 
in M. rupestris. 
23. Microchirita suddeei D.J.Middleton & Triboun, Thai Forest Bull., Bot. 41: 18 
(2013). - TYPE: Thailand, Phrae, Rong Kwang District, Tham Pha Nang Khoi, 
210 m alt., 17 August 2012, Middleton, D.J., Karaket, R, Suddee, S. & Triboun, 
P. 5618 (holotype BKF; isotypes E [E00629451], P [P00966761], QBG, SING 
[SING0229832]). (Fig. 15A-C) 
