251 





- CHINA. - Kwangtung ; among rocks on the muddy banks of 

 the Canton River, T. Sampson ; Shing-hing Pass, West River, 

 0. Ford, 



' 493. Philadelphia madrensis, HemsL [Saxifragaceae-Hydran- 

 geae] ; species P. microphyllo proxima, cliff ert ramulis floriferis 

 elongatis, foliis subtus sericeo-pilosis apiculatis, floribus minoribus 

 et calyce extra dense tomentoso. 



• Frittex ramis floriferis graciilimis valde elongatis rubris striatis 

 parce pilosulis apice 1-3-fioris. Folia subsessilia, tenuia, ovata, 

 rf>-3*5 cm. longa, acuta, apiculata, basi rotundata, semper integra, 

 subtrinervia, subtus dense serieeo-pilosa, alba, supra parce pilosula, 

 demum glabrescentia, in axillis coma densa piloram brevium 

 alborum instructa. Flores tetrameri, circita, 2-5 cm. diametro, 

 saepius solitarii, previter pedicellati. Calyx extra intusque 

 hirsutus ; lobi crassi, ovati, circiter 0*5 cm. longi, apiculato- 

 aeuminati. Petala alba, ovata, 1 cm. longa, apice rotundata, basi 

 lata. Stamina circiter 32, inaequalia, longiora 6-7 mm. longa, 

 filamentis in phalanges 4 plus minus ve connatis. Ovarium apice 

 glabrumvel pilis paucissimis instructum ; styli glabri,ad medium 

 connati. — P. mexicanus. Seem. Bot. Voy. Herald, p. 294, et. 

 HemsL in Biol. Centr. Am., Bot., vol. i. p. 384, pro parte, non 

 Schlecht. 



* Mexico. Sierra Madre, Durango, Seemann, 2167. 



494. Begonia (Kne3ebeckia) dichroa, Spragae [Begoniaeeae] ; 

 species distincta, nullae adhuc cognitae proxima, floribus femineis 

 bicoloribus. 



Planta elata, glabra, pilis minutis moniliformibus glandulosis 

 in innovationes et inflorescentiam adspersis exceptis. Folia 

 plantae juvenilis rhomboideo-elliptica, semicordata, acuminata, 

 10-12 cm. longa, 5-5-5 cm. lata, albomaculata ; folia in planta 

 adulta sub anthesi incipiente provenientia ovata-oblonga, apice 

 longe acute acuminata, basi valde obliqua, semicordata, 8-nervia, 

 superne nervis utrinque 3-4 penninervia, 22 cm. longa, 9-11 cm. 

 lata, margine leviter undulata, supra saturate viridia, nitidnla, 

 subtus pallida ; petioli 2-2*5 cm. longi. Stipulas ovatae, 

 acute acuminatae, 2*5 cm. longae, 1*5 cm. latae. Pedunculus 3 cm. 

 longus, dichasium gradus quarti gerens, floribus masculis 

 terminalibus, femineis axillaribus. Bracteae. cymbiformes, in. 

 statu explanata ovatae, obtusae, 1-1*5 cm. longae, 0*8-1 cm. latae, 

 ut rhachis coccineo-tinctae. Flores mascnli pedicellis circiter 

 2 cm. longis: Perianthii segmenta 4, coccinea, 2 exteriora late 



rotundata, 1-2 cm. lon<?a, 4*5 mm. lata. Stamina in toro convexo 

 1:5 mm. alto insidentia, filamentis 2-3 mm. longis, antheris vix 

 1*5 mm. longis, loculis versus basin convergentibus. Flores 

 feminei sessiles vel breviter pedicellati. Perianthii segmenta 

 coccinea, 5, quorum 2 exteriora late obovata, obtusa, 14 mm. longa. 

 11 mm. lata, intimum oblongum, rotundatum, 7-8 mm. longuin, 

 vix 4 mm. latum, cetera 2 intermedia. Ovarium 3-loculare, I'D 

 cm. longam, album, alis 6-7 mm. latis, placentis bipartitis undique 

 ovuliferis. Styli ' basi brevissime connati, 3-35 mm. longi. 



