1902.] G- K\t\g— Materials for a Flora of the Malayan Peninsula, 57 
reticulated ; albumen very scanty or 0, — Distrib. Species 400 (of wbicli 
3J>8 belong to the f'cims 'Begonia)^ in all tropical mobfc countries j not 
yet Diet witli in Australia. 
1. Beoohia, Limu 
Characters of the Order. 
GttoiiP I. Capsule 3-ceUed, witii 3 nearly equal narrow 
verfciimlly oblong wingSj doliiflciirg by 2 oblocg valTea on 
each face between tUcwiiigs ; — 
Small aeauleacenb herbs, only s, fow inclies in beigbt ; 
1 0ft ves rotund -ovate Bligbtly 'obi iquo ... ... I, B. Forbeaii* 
Horba with stoma 2 or 3 feet high j ]ea,vm oblkinoly ovate- 
oblong or oTafco-loucookte, the baio oorJat^ atid very 
unequal -Hided — 
Main (lowora '2 t-o '3 in. acroaa „, ... ... 2. B, isopteta. 
tlnlG floweis 1"5 in. across ... ... ... 3. B, isopteraidea. 
Oaoop II, Cap^ulo S cslled, triquetrous, with 3 ahoi't im- 
oqual wings, dchiseing irregularly by the brc^akiti;^ np of tbo 
fragile fjieua between tUe wingii; anthers obuvoid, orteu 
emiirgiiiate at the apex ; — 
Canlescotit ; roots toek tnberons : — 
Upper siirfacos of loaves wiUi iiumorous a<iprosged 
white ateiiato hairs ; braota of inrtor©HOOn«e "05 to "l in. 
louf^, densely ad pressed- pnbojM itaoi ; male Huwera *2 kj 
*2o iu. in diam. ; cu pa nles about 3 iti. broad ... 4, B. stHuaUi. 
Ijpper snrfaeoa of loaves acatitily adpresuod biiry; 
bracts '33 to *5 in. long, glabrous ; male flowora '6 in, 
and capstilcs *6 in. acroaa ... ... ... 5, B. antinin^nsts. 
Leavoa ghkbroiis ... ... ... ... 6. B, debilii. 
Aoauloacent 5 rhbomo creeping!^ 
Loa.voa rather thick (whoii dry), rotund-reniform, 
deeply cordate the baaal lobes overlapping, the nervea 
beneath and the potioloa rusty- tome ritoae ... 7. B. thaipirijgenvis* 
Leaves vei'y tbin (whtia dry), obliquely ovatc-reriJforni, 
qnito gtabrons cicopt for a few sparse bairs on the 
under aarfacG of the ncrvos ; petioles glaljfous ... B. B, gt^ttaia. 
Group ni, Ciipsnle 2-celled, triquetrous with 3 wings on© 
of whioh is mueh eloiigatodl tratisvoraoly bo as greatly to 
exceed the other two, dehiscuig by the rupture of tho stent 
tnembranoiu faces between fcha winga 
Anthers cueeiforui-oblong ; leaves peltate ... 9. Hat^kaTlii, 
A n tho rs linear-oblong or linear ; fefives not. peltate 
Leavoa not at all or very Ik. tie oblique even at the base, 
not cordate} petioles very long: — 
tieaves with coarse hairs on both Bucfacos : — 
Loavea narrowly lanceolate . .. 10. B. Scoricrhiiiit. 
Lea voa ovate 'lanceolate ... ... ... 11* B, KnuHilerinna. 
J, n. 8 
