POGONIA 15 



2. POGONIA Juss. 



Terrestrial herbs, with fleshy roots or a tuber. Leaves 

 wanting, or appearing on the stem with the flowers ; stalk 

 sheathing, blade broad. Flowers medium-sized or small, corym- 

 bose, erect. Sepals equal, free, erect. Petals similar to, and 

 nearly as long as, the sepals, erect. Lip erect from the base 

 of the column, free, not spurred, contracted below, narrowly 

 embracing the column, 3-lobed, the face with 1-3 raised lines. 

 Column elongate, at the apex slightly thicker, with a short 

 rostellum ; stigma under the rostellum oblong or broad ; clinan- 

 drium more or less elevated, entire or denticulate. Anther more 

 or less incumbent, obtusely conical or semiglobose ; pollinia two, 

 thinly granular. Capsule ellipsoidal, erect. 



Species about 90, widely dispersed over the world. 



Stem leafy 1. P. macrophylla. 



Stem leafless 2. P. gentianoides. 



1. P. macrophylla IAndl. in Ann. & Mag. Nat. Hist. ser. 3, 

 i. 335 (1858) ; stem leafy ; flowers greenish. Cogn. in Symb. 

 Ant. vi. 317. P. phvsurifolia Reichb. f. in Nederl. Kruidk. Arch, 

 iv. 324 (1859) ; Griseb. Fl. Br. W. Lid. 637. (PI. 1, f. 11.) 



In damp shady places ; probably in fl. all the year, our specimens were 

 collected in Feb., April, June & Dec. ; woods above Dunrobin Castle, 

 St. Thomas in East, Purdiel J.P. 2090, Morris ! Mabess River, 2500 ft., 

 Q. Nichols ! Vinegar Hill, St. George, 4000 ft. ; ridge below Vinegar Hill, 

 3800 ft. ; near Mabess River, 3500 ft. ; Harris ! Fl. Jam. 6252, 7840, 9013, 

 10,097. Cuba, Hispaniola, Porto Rico, Guadeloupe, Dominica, St. Lucia, 

 St. Vincent, Grenada, Venezuela, Guiana, Colombia. 



Plant 9-12 in. high, glabrous. Stem often prostrate at the base and 

 rooting at the nodes, erect above, purple, 1-3 dm. 1. Leaves, blade ovate, 

 acute or obtuse, at the base rounded, sometimes somewhat cordate and 

 clasping, green above, deep purple beneath, conspicuously 3-nerved, 

 3-7 cm. 1., 2-3 cm. br. BMcemes 1-several, with numerous broad bracts, 

 short or becoming long, with 1-6 flowers open at one time at the apex, 

 2-13 cm. 1. Flowers, perianth J in. or more 1. Bracts, floral broadly 

 ovate, obtuse, clasping, much shorter than the ovary, 5-1 cm. 1. Pedicels 

 4 mm. 1., elongating often to 5*5 mm. in fruit. Ovary slender with thin 

 longitudinal ridges, 11 or 12 mm. 1. Sepals oblanceolate, 3-nerved, margins 

 somewhat involute, strongly keeled, keel ending in a pointed tip, about 

 1*5 cm. 1., 3*5 mm. br., lateral falcate. Petals oblanceolate, acute or 

 somewhat obtuse, 3-nerved, about 1*4 cm. 1., 2*2 mm. br. Lip in outline 

 obovate, a little shorter than the petals (by 1 mm.), nearly 5 mm. br. 

 (including lobes), many-nerved, middle vein prominent, 3-lobed above; 

 middle lobe much larger than the lateral, somewhat roundish-rhomboid, 

 margin somewhat eroded ; lateral lobes oblong, obtuse, with a very narrow 

 sinus. Column narrowly winged ; clinandrium with 2 pointed lobes. 

 Capsule nearly 2 - 5 cm. 1., 7 mm. br. 



2. P. gentianoides Spreng. Syst. Hi. 706 (1826); stem leaf- 

 less; flowers dark purple. IAndl. Gen. & Sp. Orcli. 413 ; Griseb. 

 op. cit. 637 ; Cogn. op. cit. 315. Limoclorum gentianoides Sw. Prodr. 

 119 (1 788). Arethusa gentianoides Sw. Fl. Ind. Occ. 1436 (1806) 

 & Ic. ined. t, 18. (PL 2, f. 13-15.) Type in Herb. Mus. Brit. 



