788 HYPERICACEAE 



broad : petals often about twice as long as tlie sepals : capsules ovoid, about 4 mm. bigh, 

 commonly surpassed by the sepals. 



In pine lands, North Carolina to Florida. Summer. 



6. Hypericum setosum L. Annual or biennial, rough-tomentose. Stems erect or 

 ascending, 3-6 dm. tall, terete, simple or sparingly branched : leaf-blades elliptic, oval 

 to ovate-lanceolate, 3-15 mm. long, acute, longer than the internodes or slightly shorter, 

 sessile : cymes fcAv-flowered, dichotomous, corymbose : bracts lanceolate or subulate-lance- 

 olate : sepals oval, ovate, or ovate-lanceolate, 2.5-3.5 mm. long, ciliate, acute or somewhat 

 acuminate : corolla yellow, 7-10 mm. broad : petals involute at maturity : capsules oval or 

 ovoid-oval, 4-5 mm. long. [H. pilosum AValt.] 



In moist pine lands and low grounds, North Carolina to Florida and Louisiana. Summer. 



7. Hypericum dolabrifdrme Vent. Perennial, herbaceous. Stems decumbent, usu- 

 ally branched at the base, the branches 2-5 dm. tall, slightly angled : leaf-blades linear or 

 nearly so, 2-5 cm. long, with shorter leaves usually clustered in the axils, acute or acutish, 

 more or less revolute, sessile : cymes simple or dichotomous, and forming broad few-flowered 

 corymbs : bracts oblong to lanceolate : sepals unequal, foliaceous, lanceolate to ovate-lance- 

 olate, 6-10 mm. long : corolla yellow, about 2 cm. broad : capsules leathery, conic-ovoid, 

 7-9 mm. high, acuminate. 



On dry hillsides, Kentucky to Missouri, Georgia and Tennessee. Spring and summer. 



8. Hypericum turgidum Small. Perennial, shrubby. Stems branching, 3-6 dm. 

 high or taller, with slightly winged or merely sharply angled branchlets : leaf-blades 

 almost linear to linear-oblanceolate, 1-2.5 cm. long, acute, revolute, somewhat paler 

 beneath than above, sessile : flowers several in terminal cymes : sepals ovate to elliptic, 

 about 3 mm. long, acute or slightly acuminate : corolla yellow, about 1 cm. broad : sta- 

 mens numerous : capsules subglobose, about 3.5 mm. in diameter, abruptly pointed, turgid. 



On mountain slopes, between Huntsville and Summerville, Alabama. Summer. 



9. Hypericum opacum T. & G. Perennial, herbaceous. Stems erect, 3-12 dm. tall, 

 simple, or sparingly branched, the twigs 2-winged : leaf-blades firm, oblong to oblong- 

 lanceolate, or sometimes linear-oblong, 1-3 cm. long, sessile, often somewhat clasping : 

 cymes dichotomous, forming open corymbs 2-10 cm. broad : bracts subulate, 2--10 mm. 

 long: sepals obovate to oblong, 2.5-4 mm. long: corolla yellow, 7-11 mm. broad: petals- 

 fully twice as long as the sepals, oblique and obliquely acute : capsules ovoid, 5-6 mm. 

 long, 3-lobed, abruptly narrowed at the apex. 



In sandy soil, South Carolina to Florida and Mississippi. Summer. 



10. Hypericum sphaerocdrpum Michx. Perennial, herbaceous. Stems 3-9 dm. 

 tall, woody below, simple or sparingly branched above, the branches 4-angled : leaf-blades- 

 firm, linear-oblong to linear-lanceolate or sometimes narrowly oblong, 1.5-8 cm. long, 

 obtuse or acutish, more or less revolute, sessile, often slightly clasping : cymes dichoto- 

 mous, forming loosely several-flowered corymbs : bracts linear to oblong, 2-10 mm. long : 

 sepals ovate to lanceolate, 3-4 mm. long, acute : corolla yellow, 1-1.5 cm. broad : petals 

 obliquely cuneate or obovate-cuneate, laterally apiculate : capsules varying from globose 

 to globose-ovoid, 4-6 mm. long. 



On river banks, Ohio to Illinois, Alabama and Arkansas. Summer. 



11. Hypericum nudiflorum Michx. Perennial, shrubby. Stems 3-10 dm. tall, the 

 twigs 2-winged : leaf-blades thinnish, elliptic-oblong or elliptic-lanceolate, 1.5-6 cm. 

 long, obtuse, flat, with a narrow edge, sessile : cymes dichotomous, forming naked 

 peduncled loosely-flowered corymbs 4-12 cm. broad : bracts subulate : flowers light 

 yellow, about 2 cm. broad, short-pedicel led : sepals elliptic-oblong or elliptic-oblanceo- 

 late, 3-4 mm. long, obtuse or acutish : petals bright yellow, 6-8 mm. long, over twice as 

 long as the sepals : placentae extending to near the axis of the ovary : capsules conic- 

 ovoid, 6-7 mm. long, acuminate. 



In sandy soil, North Carolina to Florida and Alabama. Summer. 



12. Hypericum apocynifolium Small. Perennial, shrubby. Stems 4-7 dm. tall, 

 with a red somewhat slireddy bark, the branchlets narrowly 4-winged : leaf-blades oblong 

 or slightly broadest near the middle, 2-4 cm. long, bright green, rounded or emarginate at 

 the apex, rarely revolute, pale beneath, minutely punctate, more or less cuneate at the 

 base, nearly sessile : flowers 3-5, in terminal cymes : sepals spatulate, elliptic or oval, 3-5 

 mm. long, fully one-half as long as the petals, obtuse or acutish, persistent : petals yellow, 

 oblong, 8-9 mm. long: capsules oblong-conic, 12-13 mm. long, acute. 



In swamps, Georgia to Florida, Arkansas and Texas. Summer. 



13. Hypericum adpr6ssum Bart. Perennial, shrubby below. Stems erect or 

 ascending from a decumbent or creeping base, 2-6 dm. tall, simple or nearly so, 2-edged 



