NORTH AMERICAN FLORA 



[Volume 25 



Outer and inner sepals nearly equal at maturity, shorter than the 



capsule or about equaling it. 

 Outer sepals much longer than the inner, all surpassing the capsule. 



II. Neo-mexicana. 



Outer sepals lanceolate ; flowers borne in virgate interrupted raceme-like 



cymes. 

 Outer sepals ovate ; flowers borne in short fastigiate corymb-like or con- 

 tinuous raceme-like cymes. 

 Outer sepals obtuse or merely acute at maturity ; capsules 3 mm. long. 

 Outer sepals acuminate at maturity ; capsules 4 mm. long. 



A single species in our range. 

 A single species in our range. 



III. Anomai.a. 



IV. Cathartica. 



V. Scabrella. 



Staminodia entire. 



Androecium pubescent. 



Stem and leaves pubescent. 



Sepals with entire slender tips ; filaments sparingly ciliate at the 



base; staminodia glabrous ; Mexican species. 

 Sepals glandular-toothed to the apex ; filaments and staminodia 

 copiously ciliate ; Bahamian species. 

 Stem and leaves glabrous, bright-green or glaucous. 

 Staminodia lanceolate ; capsules ovoid. 

 Staminodia deltoid; capsules spheroidal. 

 Androecium glabrous. 



Leaf -blades bristlv-ciliate. 

 Leaf-blades not ciliate. 



Leaf -blades, at least those of the upper cauline leaves, narrowly 

 linear or subulate. 

 Flowers, and fruits, borne closely and evenly on the virgate 

 branches of the inflorescence. 

 Inner sepals narrowly searious-margined, much shorter 



than the capsule ; filaments almost linear. 

 Inner sepals broadly searious-margined, about as long as 

 the capsule ; filaments lanceolate. 

 Flowers, and fruits, borne remotely and irregularly on the 

 more forking branches of the inflorescence. 

 Leaf-blades mainly oblong, sometimes narrowly so. 

 Staminodia 2-lobed. 



Ovary glabrous ; filaments eciliate. 



Outer sepals almost as closely toothed as the inner. 

 Leaf-blades entire. 



Leaves opposite or apparently whorled. 

 Leaves alternate. 

 Leaf-blades glandular-toothed. 

 Outer sepals entire or with very few scattered teeth. 

 Ovary pubescent ; filaments pubescent near the base. 



Main inflorescence-axis dichotomously divided ; inner sepals be- 

 coming 3 mm. long. 

 Main inflorescence-axis elongate ; inner sepals becoming 2 mm. 

 long. 



VI. Sulcata. 

 Gynoecium 2-carpellary. 

 Gynoecium 5-carpellary. 



Inner or outer sepals, or both, glandular-toothed ; filaments linear- 

 filiform to subulate. 

 Outer sepals glandular-toothed. 

 Staminodia entire or wanting. 



Sepals, especially the outer ones, finely and regularly 

 toothed, narrowly lanceolate, long-acuminate ; capsules 

 spheroidal. 

 Sepals, especially the outer ones, coarsely and irregularly 

 toothed, oblong-lanceolate, short-acuminate ; capsules ovoid. 

 Staminodia 2-lobed. 

 Outer sepals entire, or rarely with 1 or 2 teeth near the base. 

 Styles united only below the middle. 

 Stem, branches, and leaves glabrous. 



Androecium 5.5-6.5 mm. long; styles about 4 mm. long, 



slender ; inflorescence-branches elongate. 

 Androecium 3-3.5 mm. long ; styles about 2 mm. long, 

 stout ; inflorescence-branches short. 

 Stem, branches, and lower leaf-surfaces pubescent. 

 Styles united to a little above the middle. 

 Inner and outer sepals entire ; filaments lanceolate. 



5. C. floridanum. 



6. C. macrosepalum. 



7. C. neo-mexicanum. 



8. C. sedoides. 



9. C. Kingii. 



C. Pringlei. 



C. catliai tiiuvi. 



C. sail*,, tin m. 

 C. corallicola. 



C. bahamense . 

 C. Bracei. 



16. C. lignosum. 



C. arenicola. 

 C. Wrightii. 



C. rupeslre. 



C. Coultei ianiini. 



C. Schiedeanum. 

 C. Greggii. 

 C. Cruciata. 

 C. Pringlei. 



C. Muelleri. 

 C. tenet I it m. 

 C. digynum. 



27. C. sulcatum. 



C. Harperi. 

 C. flagellare. 



30. C. guatemalense. 



