Piper trichostigma (Chaveer. & Sudmoon) Suwanp. & Chantar.

Suwanphakdee, C. & Chantaranothai, P., 2011, A new species and three taxonomic changes in Piper (Piperaceae) from Thailand, Blumea 56 (3), pp. 235-239 : 235-238

2. Piper trichostigma (Chaveer. & Sudmoon) Suwanp. & Chantar. , comb. & stat. nov. — Fig. 1

Piper thomsonii (C.DC.) Hook.f. var. trichostigma Chaveer. & Sudmoon, Acta Phytotax. Geobot. (2007) 35. — Type: A. Chaveerach 49 (holo BK), Thailand, Mae Hong Son, Mae Sariang ; C. Suwanphakdee 259 (epitype BK, BKF, KKU, QBG,here selected), Thailand, Phetchaburi, Kaeng Krachan National Park , 26 Dec. 2008 .

© 2011 Nationaal Herbarium Nederland

Distribution — Thailand: Northern: Chiang Mai, Chiang Rai, Nan, Payao, Phrae, Tak; Central: Nakhon Nayok;South-western: Kanchanaburi, Phetchaburi; Peninsular: Chumphon, Phangnga. Habit & Ecology — In evergreen forest by stream or waterfall. Phenology — Flowering: March–April; fruiting: March–May.

Note — Because of the magnitude of the differences between this and P. thomsonii , some of which are listed in Table 2, we raise P. thomsonii var. trichostigma to specific rank. In general the best characteristic for delimitation of the species is the infructescence but the type of P. trichostigma only contains a young inflorescence and no infructescence. Therefore, we select C. Suwanphakdee 259 as epitype because it has mature infructescences.

Figures

Fig. 1 a–c: Piper chiangdaoense Suwanp. & Chantar. a. Plant habit; b. portion of male inflorescence; c. infructescence. — d–f: Piper trichostigma (Chaveer. & Sudmoon) Suwanp. & Chantar.: d. male inflorescences; e. floral bracts and stamens; f. infructescences.