to the Genera.) XX.+~GYNANDRIA. 131 
Perianth 1-seriate, pegen with inflated base then contracted, hairy 
within; limb dilated, obliquely 1-2-lipped; anthers 6; ovary with 
intended or connivent placentas more or less completely 4-6-celled ; 
shrubs or perennial herbs, often twining............... 790. Aristolochia. 
Perianth 2-seriate, calyx 5-lobed often somewhat 2-lipped ; corolla 
gamopetalous, ieegited 2-lipped; anthers 2; nae completely 
2-celled’s small ereet herbs iis ivssicssiscedebees sod tecsseweetee 4. Stylidium. 
OLeaves with salva venation ; ovary 1-celled with 3- ent placentas ; 
perianth 2-seriate, outer series 3, similar or nearly so, inner series 3 dis- 
similar, with two segments more or less like outer, and a third (lip) 
usually very different in shape and size :—[p. 130] 
*Anther single :—[p. 135] 
}Pollinia waxy :—[p. 134] 
tPollinia free or those of each cell held together at the base by a 
viscid appendage, not attached by their bases or by a caudicle to 
the rostellum ee 133 
pear 4:—[p. 132] 
eaves ssl, feb y sea me tes on short, or dis- 
tichous on with the vaginal part much shorter 
than the main -Abar ; inflorescence gh ininal.; ;, flowers minute, 
racemose or spicate ; column very short, with no appendages 
or foot ; epiphytes devgh ine 892. Oberonia 
iaceous or chartaceous, not equitant 
or if, very rarely (Dendrobium § Aporum), equitant and 
fleshy, the flowers axillary and the vaginal portion of the leaf 
nearly or quite as long as the m main portion and with the 
foot :— 
Terrestrial herbs; leaves membranous, rarely (Liparis 
sometimes) coriaceous, usually sessile; inflorescence ter- 
minal; flowers rather small, in racemes or spikes ; column 
prolonged below as a foot :— 
Lip with basal auricles; column very short with broad 
893. 
HAAS Topica seseetees icros 
oe without basal auricles; column long, with callosities 
r wings or both ; rostellum sometimes double 
. Liparis. 
Epiphytic, occasionally casually sa but never atte 
terrestrial herbs; leaves chartaceous or or coriaceous; colum: 
more or less prolonged below as a pera 
§|Stems solitary or ccespitose or co composed of discrete 
pseudo-bulbs en attached to a short or long 
rhizome :[p. 182] _ 
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