GENTIANEjE. 423 



3. SLEVOGTIA, Reichenb. 



Calyx 5-fid. Corolla infundibular, marcescent. Stamens alternating with teeth, in- 

 cluded : anthers erect, straight, corniculate at the top. Style deciduous : stigma capitate. 

 Capsule 1-celled : seeds marginal on the valves. — Perennial, leafy herbs ; flowers glomerate 

 in the axils. 



3. S. occidentalis, Gr. Stem roughish ; leaves elliptical-lanceolate, acuminate at both 

 ends, sharply 'pointed ; calyx-lobes subulate, squarrose, nearly as long as the capsule. — Plum. 

 Ed. Burm. t. 81. /. 2. — Gentiana verticillata, L. (Hippion, Spreng.). — 1'-3' high; leaves 

 3-nerved, 2"-4" long j corolla " blue," 3'" long. — Hab. S. Vincent !, Guild., Grenada !, 

 Lane ; Trinidad !, Sch., Pd., Cr., S. Anns, Maraval ; [Cuba to French islands]. 



4. COUTOUBEA, Aubl. 



Calyx 4-fid, 3-2-bracteolate. Corolla shortly salver-shaped, marcescent. Anthers sagit- 

 tate, straight, exserted. Style deciduous : stigma 2-lamellate. Capsule half-4-celled, 2-valved : 

 seeds marginal on the introflexed valves. — Annual, virgate herbs ; flowers spicate or race- 

 mose, white or reddish. 



4. C. densiflora, Mart. Leaves oblong-lanceolate, roundish or cordate at the sheath- 

 ing base ; Jlowers spicule, 3-bracteolate, densely approximate or the inferior somewhat 

 distant. — Cav. Ic. t. 328 : a form with ternately whorled leaves (C. ternifolia, Cav.). — C. 

 spicata, Kth., Benth. {non Aubl.). — 1'-3' high; corolla-tube 3 / "-2" / long, as long as the 

 lobes.— Hab. Trinidad !, Lockh., Sch., on dry, gravelly banks ; [Guadeloupe t ; Honduras ! 

 to Brazil I]. 



5. SCHULTESIA, Mart. 



Calyx 4-5-fid -. tube 4-5 -winged or -keeled. Corolla infundibular, marcescent: lobes 

 broadly rounded or subtruncate. Anthers exceeded by the corolla-limb, straight, incumbent. 

 Style deciduous : stigma 2-lamellate or 2-globose. Capsule 1-celled : seeds marginal on the 

 slightly introflexed valves. — Annual herbs ; stem erect, tetragonal ; flowers in terminal 

 cymes or single, rosy, purple or yellow. 



5. S. stenophylla, Mart. Leaves oblong, lanceolate or linear; cymes dichotomous : 

 lateral flowers 2-bracteolate, central ebracteolate, shortly pedicellate ; calyx ^-winged: wings 

 transversely veined, seiniovate or semilanceolate ; corolla rosy -violet, 4-fid lobes subtruncate- 

 obovate ; filaments 2-dentate below. — Aubl. t. 26./". 1; Desc. Fl. 1. t. 20. — Exacum 

 guianense. Aubl. E. cubeuse, Pcepp. ! — Variable ; corolla 8'" long. — Hab. Jamaica !, 

 Mac/. ; Trinidad !, Lockh., Cr., in moist savannahs ; [Cuba ! and Mexico ! to Southern 

 Brazil!]. 



6. S. heterophylla, Miq. Leaves lanceolate-linear ; cyme few-1-flowered : flowers 

 2-bracteolate with elongated bractlets, central subsessile ; calyx narrowly ^-winged ■. wings 

 transversely veined, semilanceolate-linear ; corolla large, rosy, 4-ftd: lobes obovate, mucro- 

 nulate ; filaments 2-dentate or subulate at the base. — Spithameous ; stem simple below the 

 summit, corolla 1J" to almost 2" long. — Hab. Jamaica !, Mac/. ; [Haiti!; Panama! to 

 Brazil !, in moist savannahs], 



6. LISIANTHUS, Aubl. 



Calyx 5-partite or 5-fid : divisions imbricative, not keeled. Corolla infundibular or 

 salver-shaped. Stamens inserted into the inferior part of the corolla-tube, often unequal : 

 anthers at length recurved, with the connective usually enlarged. Style persistent : stigma 

 2-lamellate. Capsule 2-celled by the introflexed valves. — Herbs or shrubs ; flowers usually 

 in terminal cymes. 



Sect. 1. Hklia, Mart. — Corolla marcescent: tube constricted, limb spreading, often 

 oblique. — Herbs ; leaves arch veined. 



7. !•. chelonoides, L. Annual; stem nearly cylindrical, simple; leaves ovate or 

 elliptical, superior sessile ; cyme-branches racemiform, with unilateral flowers ; calyx 5-fid : 

 lobes blunt ; corolla greenish, enlarged at the throat : lobes oblong, blunt, slightly exceed- 



