RUBIACEAE. 141 



13. ERNODEA Sw. Diffuse or vine-like shrubs. Leaf-blades leathery. 

 Flowers axillary. Sepals 4-6, narrow. Corolla with a long tube and 4-6 

 relatively long lobes. Stamens 4-6: filaments adnate to the top of the corolla- 

 tube: anthers narrow. Drupe thin-fleshy. 



Sepals about J^ as long as the corolla-tube : anthers narrowly linear. I. E. littoralia. 

 Sepals about % as long as the corolla-tube : anthers narrowly oblong. 2. E. angusta. 



1. E. littoralis Sw. Stem and branches prostrate: leaves fleshy; blades mainly 

 elliptic, sometimes narrowly so, 2-3.5 cm. long: corolla white; tube mostly 

 over 10 mm. long: anthers over 2 mm. long: drupes mainly globular. Coastal 

 sand-dunes and rocky shores, U. S. keys, U. keys, L. keys, L. S. keys. (Bah., 

 Cuba, Ant.) 



2. E. angusta Small. Stem and branches more slender than those of E. 

 littoralis: leaves firm; blades linear, 2-4 cm. long: corolla usually reddish; 

 tube mostly less than 10 mm. long: anthers over 1.5 mm. long: drupes mainly 

 oval. Pinelands, L. keys. [E. K.] (Bah.) 



14. BORRERIA Meyer. Herbs or woody plants. Leaf-blades herbaceous. 

 Flowers in compact axillary cymes. Sepals usually 2, sometimes 4, unequal. 

 Corolla with a short tube and 4 broad lobes. Stamens 4: filaments adnate to 

 the top of the corolla-tube: anthers globular to oval. Capsule with each carpel 

 open along the inner face. 



Calyx-lobes triangular or lanceolate : corolla much longer than the calyx : filaments 

 longer than the anthers. 1. B. podocephala. 



Calyx-lobes subulate, corolla about as long as the calyx : fila- 

 ments very short. 2. B. parviflora. 



1. B. podocephala DC. Perennial, 0.5-3 dm. tall: leaf -blades linear- spatulate 

 to linear, often narrowly so, 1-3 cm. long, veinless: corolla-lobes over 1 mm. 

 long. Pinelands, L. keys. [E. K.] (Cuba, Ant.) 



2. B. parviflora Meyer. Annual, 1-9 dm. tall: leaf -blades oblong to elliptic, 

 linear-oblong, or linear, 1-2.5 cm. long, veiny: corolla-lobes over 1 mm. long. 

 Pinelands, L. keys. [E. K.] (Cuba, Ant.) 



15. SPERMACOCE [Dill.] L. Herbs or woody plants. Leaf -blades 

 herbaceous. Flowers in dense, axillary cymes. Sepals usually 4. Corolla with 

 a short tube and 4 broad lobes. Stamens 4: filaments adnate at least to the 

 lower part of the corolla-tube: anthers oval or globular. Capsule with 1 

 dehiscent and 1 indehiscent carpel. 



Corolla-lobes longer than the tube. 1. &. tenuior. 



Corolla-lobes shorter than the tube. 2. 8. keyense. 



1. S. tenuior (L.) Lam. Stems 1-5 dm. tall, often pubescent: leaf -blades oblong, 

 elliptic, or oblong-lanceolate, 2-5 cm. long: corolla-lobes ovate, shorter than the 

 tube: fruits over 2 mm. long, coarsely hispidulous. Hammocks, L. keys. 

 [E. K.] (Ber., Bah., Cuba, Ant.) 



2. S. keyense Small. Stems and branches prostrate, 1-4 dm. long, glabrous: 

 leaf-blades oblong, varying to broadest below or above the middle, or oblong- 

 lanceolate, mostly 1-2 cm. long: corolla-lobes ovate, longer than the tube: 

 fruits 1.5-2 mm. long, minutely hispidulous. Open hammocks and sandy places, 

 U. keys, L. keys. 



16. GALIUM L. Weak or wide-spreading herbs. Leaves with blades 

 and stipules about equal in size. Flowers in simple or rarely branched cymes, 

 the ultimate flower-stalks bracted. Sepals usually obsolete. Corolla rotate, 



