ASCLEPIADACEAE. 149 



glabrous within. Crown aduate to the corolla: lobes very broad, surpassed by 

 the anthers. Stigma flat. 



1. A. scoparia (Nutt.) Small. Diffuf^e vine: leaf-blades narrowly linear, 2-5 

 cm. long: calyx-lobes about 1 mm. long, deltoid: corolla-lobes greenish, 1.5-2 

 mm. long: crown-lobes about 0.5 mm. long: follicles 3.5-4.5 mm. long. 

 [Metastelma scoparium (Nutt.) Vail.] — Hammocks. — F. K. 



6. LYONIA Ell. Slender vines with verj' narrow leaf-blades. Calyx- 

 lobes longer than the corolla-tube. Corolla rotate-campanulate: lobes spread- 

 ing at the tip, glabrous within. Crown adnate to the short column: lobes 

 naked at the apex, longer than the gynostegium. Stigma conic. 



1. L. palustris (Tursh) Small. Leaf-blades linear, 2-7 cm. long, acute, pendant: 

 calyx-lobes lanceolate, about 2.5 mm. long: corolla-lobes purplish or greenish- 

 white, 3-4 mm. long: crown-lobes 1.5-2 mm. long, retuse or emarginate at the 

 apex: anther-wings about 1 mm. long: follicles 4.5-5.5 cm. long. — Hammocks. 

 — F. K. {Bah.. Cuba.) 



7. METASTELMA K. Br. Slender vines with narrow leaf -blades. Calyx- 

 lobes longer than the corolla-tube. Corolla rotate-campanulate: lobes pubes- 

 cent within. CroAvn adnate to the very short column: lobes slender, curved 

 over the anthers. Stigma flat. 



1. M. Blodgettii A.' Gray. Leaf -blades linear or linear-lanceolate, 8-27 mm., 

 long: corolla whitish; lobes penicillate-bearded near the apex within: crowni 

 adnate to the base of the column: follicles 4-5 cm. long. — Hammocks. — F. K^ 



8. EPICION Small. Slender vines with relatively broad leaf-blades> 

 Calyx-lobes shorter than the corolla-tube. Corolla campanulate: lobes pubes- 

 cent within. Crown adnate to the elongate column: lobes narrow, not longer 

 than the anthers. Stigma flat or depressed. 



1. E. bahamense (Griseb.) Small. Leaf-blades oblong to oval, 1.5-2.5 cnr.. 

 long, slender-petioled: calyx-lobes 1-1.5 mm. long: corolla white, 4-4.5 mm. 

 long; lobes obtuse: crown-lobes 1-5 mm. long: follicles 5-6.5 cm. long.— 

 Hammocks. — F. K. (Bah.) 



Order POLEMONIALES. 

 Herbs, or sometimes shrubs or trees, the plants of some groups para- 

 sitic. Leaves with dilated blades or scale-like. Flowers mainly perfect. 

 Calyx of partly united sepals. Corolla of partly united petals, regular or 

 irregular. Androecium of as many stamens as there are corolla-lobes, or 

 fewer, sometimes partially represented by staminodia, or partially obso- 

 lete. Gynoecium of 2 distinct or several united carpels. Ovary superior. 

 Fruit a capsule, a beiT\% or a dupe, or a group of nutlets or utricle-like. 



Stamens 5. 



Gynoecium of 2 distinct carpels. Fam. 1. Diciiondkaceae. 



Gynoecium of 2 or more partially or wholly united 

 carpels. 

 Fruit capsular or baccate : ovary not 4-lohed 

 Styles or stigmas distinct. 



Ovary l-li-celled, or rarely 4-or .5-celled : 

 stigmas 2. 

 Ovules, and seeds, few. Fam. 2. Coxvolvulaceae. 



Ovules, and seeds, numerous. Fam. .3 Hydroleaceae. 



