ORCHIDE^. 637 



nial divisions oblone-lanoeolate, pointed : lip as long, undivided, with an ovate-acuminate 

 summit.— Stem li^-S' high; flowers few, 2"-24'' long.— Hab. Trinidad!, Pd., dr., in 

 savannahs, O'Meara, Aripo; [Panama!; Venezuela!; New Granada I ; Guiana]. 



59. POGONIA, Juss. 



Lip free, parallel to the column, not callous, longitudinally crested : perigonial division 

 free. Column slender: poUinaria 2, furrowed. — Root or tubers terrestrial; stem with 

 clasping leaves, or aphyllous ; flowers racemose. 



186. P. physurifolia, G. Rchh. -teaziei coetaneous, alternate, broadly ovate, pointed, 

 aoruptly contracted into the tubular sheath, as long as the internodes ; raceme spiciform : 

 bracts herbaceous, subcordate-ovate or roundish, exceeding the pedicel, inferior gradually 



nical, /m/.; [Cuba!; Venezuela!; Guiana]. 



187. P. surinamensis, Idndl. (ij.). Leaves coetaneous, alternate, ovate, pointed, 

 shorter than the internodes; corymb few-1-flowered : bracts inferior herbaceous, much 

 shorter than the pedicel ; perigonial divisions lanceolate ; lip obovate, %-fid, 3-crested at 

 and along the midrib : lateral lobes ovate, exceeding the short, deltoid, crispate, middle 

 o»s.— Tubers several, thickish-cylindrical ; stem 4"-8", leaves 10"'-4"', flowers 5'" long, 

 the latter " rosy." — Hab. Trinidad \, Pd., Or., in the woods of Arima, and in savannahs ; 

 [Guiana]. 



188. P. tenuis, G. Rchb. I Leaves coetaneous, alternate, or floral opposite, short, 

 lanceolate-linear, acuminate, much shorter than the internodes ; raceme few-1-flowered ; 

 flowers distant, subsessile : bracts conform to the stem-leaves, about as long as the slender 

 ovary; perigonial divisions exterior lanceolate-linear, 2 interior lanceolate; Up cuneatc 

 oblong, with 2 small lateral lobes above the middle, broadly rounded at the summit, cris- 

 pate at the margin above, 2-crested along the midrib. — Cleistes paludosa, Benth. ! in PI. 

 Sprucean. 3624 {non (?. Mchb.). — Tubers cylindrical or oblong; stem slender, 6"-l2" 

 high ; leaves 6"'-14"' long, l"'-2"' broad, spreading-erect ; flowers 8"'-6"' long, " whitish- 

 yellow, with a purple lip." — Hab. Trinidad!, Pd., Or., in savannahs, Aripo ; [Venezuela !; 

 equat. Brazil !]. 



189. P. gentianoides, Lindl. " Subaphyllous ; scales oppressed, bluutisb ; corymb 

 6-12-Jlou)ered : bracts ovate, pointed ; perigonial divisions lanceolate, interior half as long 

 as the exterior ones ; lip cuneate-3-lobed, 8-crested at and along the midrib : middle lobe 

 roundish, lateral shorter, ovate," — Arethusa, Sw. : I have seen a sketch of it, taken from an 

 original specimen, by G. Ecbb. — " Tuber single, cylindrical ; stem 4"-10" high ; flowers 

 pale-purplish." — Hab. Jamaica {Sw.), among shrubs, near Morant Bay. 



60. EPISTEPHIUM, Kth. 



Lip free, its base embracing the column : perigone supported by a dentate cupnle, 

 spreadmg. Column 3-fid at the summit ; the middle lobe forming the anther-bed : " poUi- 

 naria [4, compressed." — Root fascicled-fibrous; leaves rigid, reticulated-veiny; flowers 

 large, usually spicate. 



190. E. i>arTifloruiu, JAndl. Leaves ovate-lanceolate, pointed, septnplinerved, con/- 

 traded into a short petiole ; flowers distant, in a terminal, usually simple spike: bracts 

 minute, deltoid; perigonial divisions spathulate-oblong, equal, a little exceeded by the lip : 

 cupule regular ; lip roundish above the contracted base, crispate-lacerate at the margin above 

 the middle, hairy along the 3 approximate, middle nerves.— G. Rchb. {in lit) distinguishes 

 the Trinidad species (E. Cruegeri, «?'.) by "larger flowers, broader lip, bluntish sepals, and less 

 acuminate leaves ■" but these chai-acters appear variable in our series of specimens (except 

 the form of the lip).— 4'-6' high ; leaves 5"-3" long, superior gradually smaller, all dis- 

 tant; flowers white or rosy, 7'"-10"' long.— Hab. Trinidad!, Pd., Cr., rare, but grega- 

 rious. Savannah de Aripo ; [Guiana]. 



2 r 2 



