ANALYSIS OF THE GENERA 63 
either persistent or deciduous. Pollen either powdery or cohering in 
definite or indefinite waxy masses, either constantly adhering to a 
gland or becoming loose in their cells. Ovary one celled, with three 
parietal placentas. Style forming part of the column of the stamens. 
Stigma a viscid space in front of the column, ‘ Impregnation taking 
effect by absorption from the pollen masses through the gland in the 
stigmatic canal.” Capsule inferior, bursting with three valves and 
three ribs. Seeds very numerous, attached to three parietal pla- 
centas, testa loose, reticulated, contracted at each end. Embryo a 
solid undivided fleshy mass. Albumen wanting.—Herbaceous plants. 
Roots either fasciculated or tuberous, the tubers being ovate, entire, or 
palmated. Stem rarely divided. Leaves simple, entire, ampleaicaul, 
and often articulated with the stem. Llowers in terminal or radical 
spikes, racemes or panicles sometimes solitary, bracteated, and having 
all the paris inverted, in consequence of the twisting of the ovary. 
TRIBES, 
Pollen masses stalked, of an indefinite 
number of cohering grains, enclosed 
MMM OUCH ceceraece secon ssc Moccene) pscase, 07) ORELRY DEA. 
Pollen masses not stalked, simple, con- 
sisting of granules in a slight state 
of cohesion. Anthers parallel with 
PHOVSH OMG seiceesievs isoesersessanenreneseese Qs INEOTTIER, 
Pollen masses not stalked, simple, con- 
sisting of granules in a slight state 
of cohesion. Anthers terminated 
like a lid, persistent ..........sseseeee. 3. ARTHUSER. 
Pollen cohering in grains or masses, 
which are definite in number, and 
WADEY. sii ceosessoscsessesitecrarcocsvevespiony 4, MALAXTDEA 
Lateral anthers fertile, the intermediate 
one sterile and petaloid......ses.ss.s.. 9, CYPRIPEDIE. 
GENERA. 
TrRisE 1. OPHRYDE. 
Lip spurred at the base. 
Glands of the pollen masses enclosed 
IN & POUCH. ...c.s0¢ssanscerearsessasvers ORCHIS, V. 3. Pp. 1103. 
Glands of the pollen masses naked. 
Pollen masses approximated ......... G@YMNADENIA, Vv. 3. p. L111. 
Pollen masses distant from each 
OUMEL: .cioevscccsenstsecsacespenstus) ELABENARIAY Wolds psd MEG: 
Lip not spurred at the base. 
Glands of the pollen masses enclosed 
in a pouch. 
Pouch single, enclosing both pollen 
ANASSOSe eae sessetion cecersersuers, ANCE RAS Mass Dsmlulelzee 
