165 
Hendersonia Osteospermi, Wakef. 
Maculae orbiculares, concentrice zonatae, pallidae, zona 
obscuriore brunnea circumdatae. Pycnidia epiphylla, sparsa, 
minuta, pariete tenui plectenchymatico. Con- 
re idia eylindracea fusca, asperulata, 3-septata, 
aS OQ non vel vix constricta, 20-23 x 6-7. 
South Arrica. Kewboom, Cape Province, 
istersonin Odataneset; DO Ne seated = Osteospermum, P. A. Van 
Conidia x 500. der Bijl, No. 409. 
The species is slgteaietian: ey the irregular outline of the 
spores. The wall can scarcely be called verrucose, but apparently 
& few minute flattened warts are present which give a somewhat 
wavy appearance when the spore is viewed in, optical section. 
Colletotrichum Pterocelastri, Wakef. ; 
Maculae amphigenae, parvae, 1-1-5 mm. diametro, sparsaé 
vel confluentes, pallidae, purpureo-cinctae. 
Acervuli minutissimi, atri, pauci, in centro 
macularum insidentes. Setulae numerosae, 
fasoidulas, cylindraceae, apice hyalino rotun- 
datae vel attenuatae. onidia oblonga, 
hyalina, guttulata, 15-17 x 4u. 
South Arrica. Knysna, Cape Province, 
on living leaves of Pterocelastrus variabilis, 
Sond., P. A. Van de Bijl, No. 404. 
Colletotrichum Pterocelastri. 
Seta and Conidia x 500. 
XXVI.— CONTRIBUTIONS TO THE FLORA OF SIAM. 
ADDITAMENTUM XII. 
W. G. CRar. 
Tetracera Loureiri, Pierre mss. nom. nov. 7. fragrans, 
Ridley in Journ. Str. Br. Roy. As. Soc., No. 59, p . 62 (1911) non 
Willdem. et Th. Dur. (1899). 7’. sarmentosa, Vahl, var. Loureiri, 
Finet et Gagnep. in Fl. Gén. Indo-Chine, I. p. 16. 7. as sa, DC., 
var. Loureiri, Finet et Gagnep. in Bull. Soc. Bot. Fr., Mém. 4, 
Ba ngkok, Zimmermann 74, 180, Kerr 4357, Marcan 325, 
Mrs. Williamson (ex Ridley, 1.c.), Anghin, Schomburgk chee 
Sriracha, Mrs. D. J. Collins 243. Muong Pran, Pierre 225. 
Luang, Pierre 224. Prachuab, Winit 318. 
Distr. Perlis, Cambodia, Cochinchina. 
Siamese name, Thao orakon (ex Winit). 
