Part 2, 1921] RUBIACEAE 99 



8. Manettia barbata Oerst. Vidensk. Meddel. 1852: 47. 1852. 



Lygistum barbatum Kuntze, Rev. Gen. 287. 1891. 

 Manettia stenophylla Donn. Smith, Bot. Gaz. 56: 58. 1913. 



Stems suffrutescent, slender, terete, striate, glabrous, the internodes elongate; stipule- 

 sheath short, the lobes deltoid, often bidentate, glandular-ciliate; petioles 0.5-1 cm. long; 

 leaf-blades lance-linear, 3-4.5 cm. long, 5-6 mm. wide, acute at the base, acuminate at the 

 apex, thin, glabrous, the lateral veins mostly obsolete, the margin revolute; flowers cymose or 

 solitary in the axils, the cymes few-flowered, the peduncles 2-3 mm. long, the pedicels 1-2 mm. 

 long; hypanthium obovoid, 2 mm. long, the 4 calyx-lobes short-connate above the ovary, 

 oblong-ovate, 2 mm. long; corolla white, subsalverform, 5-6 mm. long, glabrous outside, the 

 tube glabrate within, the lobes oblong-ovate, barbate within; stamens inserted near the top 

 of the corolla-tube, the anthers linear, 1 mm. long; style equaling or shorter than the corolla; 

 capsule thin, obovoid, 4.5 mm. long. 



Type locality: Monte Aguacate, Costa Rica, altitude 600 meters. 

 Distribution: Mountains of Costa Rica. 



9. Manettia flexilis Brand. Univ. Calif. Publ. Bot. 6: 196. 1915. 



Stems herbaceous, slender, angulate, puberulent or villosulous, the internodes elongate; 

 stipule-sheath short, glandular-ciliate; petioles stout, 2-6 mm. long; leaf-blades ovate, ovate- 

 oblong, or lance-ovate, 3-7 cm. long, 1-3 cm. wide, acute or obtuse at the base, acute to long- 

 attenuate at the apex, usually subabruptly so, thin, glabrous above or puberulent along the 

 veins, beneath usually short-pilose along the veins, elsewhere sparsely puberulent or glabrous, 

 the lateral veins conspicuous, slender, arcuate; inflorescence axillary, cymose, few-flowered or 

 sometimes 1 -flowered, the peduncles 1.5 cm. long or shorter, the pedicels 0.3-2.5 cm. long; 

 hypanthium 2-3 mm. long, glabrous or pilose, the 4 calyx-lobes linear to lance-ovate, 1.5-4 

 mm. long, acute, glabrate, recurved, usually ciliate; corolla rose-colored, glabrous outside or 

 sparsely pilose, salverform, the tube stout, 6-7 mm. long, pilose within above the middle, the 

 lobes 2-3 mm. long, densely barbate within; anthers 1.5 mm. long, subexserted; capsule 4.5-7 

 mm. broad, thin; seeds 2-3 mm. broad, dark-brown. 



Type locality: Cerro del Boqueron, Chiapas. 

 Distribution: Chiapas to Costa Rica; also in Ecuador. 



10. Manettia Lygistum (L.) Sw. Prodr. 37. 1788. 



Petesia Lygistum L. Syst. Nat. ed. 10. 894. 1759. 



Lygistum axillare Lam. Tab. Encyc. 1: 286. 1791. 



Gonzalea Lygistum Schultes, in R. & S. Syst. Veg. Mant. 3: 132. 1827. 



Manettia lygistoides Griseb. Mem. Am. Acad. II. 8: 505. 1862. 



Manettia Lygistum lygistoides K. Schumann, in Mart. Fi. Bras. 6 6 : 180. 1889. 



Stems herbaceous or suffrutescent at the base, stout, angulate, retrorse-pilose, puberulent, 

 or glabrate, the internodes usually short; stipule-sheath short, the lobes acute or truncate, 

 glandular-ciliate; petioles stout, 2-10 mm. long; leaf-blades usually rounded-ovate, sometimes 

 ovate or lance-ovate, 2-4.5 cm. long, 1-3 cm. wide, broadly rounded or subcordate at the base, 

 acute or acuminate or sometimes very obtuse or rounded and subcuspidate, usually coriaceous, 

 lustrous above, glabrous, the primary veins usually impressed, sparsely sordid-villous beneath 

 along the veins, the lateral veins very prominent, arcuate, the secondary veins usually promi- 

 nently reticulate on both surfaces, the margins often revolute; inflorescence usually axillary, 

 cymose, 3-5-flowered or sometimes 1-flowered, the cymes short-pedunculate, the pedicels 

 2-5 mm. long; hypanthium 3 mm. long, sparsely viscid-villosulous or glabrate, the 4 calyx- 

 lobes ovate or triangular, 1.5-2.5 mm. long, acute, viscid-ciliate, alternating with small teeth; 

 corolla blue, subsalverform, more or less villosulous outside, the tube stout, 10-12 mm. long, 

 villous within in the upper part, the lobes deltoid-ovate, about 4 mm. long, acutish, minutely 

 papillose within; stamens inserted in the corolla-throat, exserted, the anthers 1-1.5 mm. long; 

 capsule about 4 mm. in diameter, coriaceous, blue or blackish; seeds 1-2 mm. long, dark-brown. 



Type locality: Jamaica. 



Distribution: Mountains of Cuba, Jamaica, and Haiti; also in Venezuela and the Guianas. 



Illustration: P. Br. Hist. Jam. pi. 3,f. 2. 



