80 HYPEBICACEAE. 



Leaf-blades linear-oblong, spatulate or ob- 



lanceolate. 4. H. ambiguum. 



Leaf-blades narrowly linear or narrowly 



linear-spatulate. 5. H. galioides. 



Leaves of the axillary clusters about as large as 

 the subtending pair ; blades subulate or 

 linear-subulate, fleshy, about as thick as 

 wide. 

 Sepals as long as the petals or fully % as 



long : leaves mostly over 10 mm. long. 6. H. fasciculatum. 



Sepals less than % as long as the petals : 



leaves mostly less than 10 mm. long. 7. H. aspalathoides. 



Sepals follaceous. 8. H. myrtifolium. 



Capsule completely 3-celled. 9. H. densiflorum. 



1. H. opacum T. & G. Shrub 3-12 dm. tall: leaves few; blades oblong to 

 oblong-lanceolate, or sometimes linear-oblong, 1-3 cm. long: petals 3-5 mm. 

 long. 



Low pinelands and swamps, nearly throughout Fla., except the F. Keys. (Cont. ) 



2. H. nudiflorum Michx. Shrub 3-10 dm. tall: leaf -blades elliptic-oblong to 

 elliptic-lanceolate, 1.5-6 cm. long: sepals elliptic-oblong to elliptic-oblanceolate, 

 3-4 mm. long: petals nearly oblong, 6-8 mm. long: capsules conic-ovoid. 



Stream-banks, swamp-margins, and rich woods, n. Fla. (Cont.) 



3. H. apocynifolium Small. Shrub 4-7 dm. tall: leaf-blades oblong or nearly 

 so, 2-4 cm. long: sepals spatulate, elliptic, or oval, 3-5 mm. long: petals oblong, 

 8-9 mm. long: capsules oblong-conic. 



Swamps, w. Fla. (Cont.) 



4. H. ambiguum Ell. Shrub 0.5-1.5 m. tall: leaf-blades linear-oblong to spatu- 

 late, 1-2.5 cm. long: sepals linear or slightly broadened upward, 3-5 mm. long: 

 petals obliquely obovate or cuneate, almost laterally apiculate, 5-7 mm. long: 

 capsules almost conic, 5-6 mm. high. 



River-banks, river-swamps, and low grounds, n. Fla. (Cont.) 



5. H. galioides Lam. Shrub 3-8 dm. high or taller: leaf -blades narrowly linear 

 or slightly broadened upward, 0.5-1.5 cm. long: sepals linear or linear-spatulate, 

 3-4 mm. long: petals cuneately narrowed, obliquely or almost laterally pointed, 

 4-7 mm. long: capsules conic, 5-6 mm. long, acute. 



Dry woods and banks, n. Fla. (Cont.) 



6. H. fasciculatum Lam. Shrub 1-5 m. tall: leaves numerous, a bunch usually 

 clustered in the axils of the larger ones; blades leathery, linear-filiform, 1-2 

 cm. long, or shorter in the clusters: sepals linear, 3-4 mm. long, about 1 cm. 

 wide : petals bright-yellow, obliquely apiculate, 7-8 mm. long : capsules ovoid or 

 conic-ovoid, 4-5 mm. long. 



Low or wet pinelands or swamps, nearly throughout Fla., except the F. Keys. 

 (Cont., W. I.) 



7. H. aspalathoides Willd. Shrub 2-8 dm. tall: leaves very numerous, with 

 clusters of small ones borne in the axils of the large ones; blades linear- 

 subulate or linear-filiform, 5-8 mm. long, or shorter in the clusters: petals 6-7 

 mm. long. 



Pinelands, n. and pen. Fla., and the F. Keys. (Cont., W. I.) 



8. H. myrtifolium Lam. Shrub 3-10 dm. tall: leaf -blades ovate to oblong- 

 ovate, or ovate-lanceolate or rarely nearly oblong, 1-3 cm. long: sepals folia- 

 ceous, ovate, 5-8 mm. long : petals obovate, 12-15 mm. long : capsules pyramidal- 

 ovoid, incompletely 3-celled or rarely 4-celled, 5-6 mm. high. 



Low pinelands, n. and pen. Fla. (Cont.) 



9. H. densiflorum Pursh. Shrub 6-18 dm. tall: leaf -blades linear, linear- 

 oblanceolate, or linear-oblong, 1-5 cm. long, acute: sepals unequal, oblong to 

 elliptic-oblong, 2-2.5 mm. long: corolla bright -yellow, 1-1.5 cm. broad; petals 

 obliquely pointed: capsules ovoid, 4-6 mm. long, slightly 3-lobed. completely 

 3-celled. 



Swamps and river-banks, n. Fla. (Cont.) 



