190 HYPERICACEAE. 



reddish-purple, 2-2.5 cm. long: carpels obovate, 3 mm. long. Rare, in fields 

 and waste places and about gardens. Nat. of Eu. Sum. HIGH-MALLOW. 



5. HIBISCUS L. Herbs, shrubs, or trees. Leaf -blades entire, lobed, or 

 parted. Involucel of several, rarely 3 or 5, bractlets. Sepals 5, more or less 

 united. Petals 5 3 broad. Carpels forming a 5-valved capsule. Sum. 

 ROSE-MALLOW. 



Shrub or tree. 1. H. syriacus. 



Herbs. 



Calyx fitting closely to the capsule : perennial plants : leaf- 

 blades toothed or hastate. 

 Leaf-blades white-pubescent beneath : seeds glabrous or 



nearly so. 2. H. Moscheutos. 



Leaf-blades glabrous : seeds pubescent. 3. H. militaris. 



Calyx inflated : annual plants : leaf -blades pedately lobed. 4. H. Trionum. 



1. H. syriacus L. Plants 1-6 m. tall (occasionally tree-like) : leaf -blades 3- 

 lobed, coarsely crenate, 3-12 cm. long: bractlets linear or linear-spatulate, 

 10-20 mm. long: calyx-lobes triangular-ovate: petals deep-pink, or white with 

 crimson blotches at the base: capsules oblong-ovoid, 2-2.5 cm. long. Com- 

 mon, in waste places and about gardens. Nat. of As. SHRUBBY-ALTHAEA. 



2. H. Moscheutos L. Plants 8-20 dm. tall, velvety-tomentose : leaf -blades 

 lanceolate to broadly ovate, dentate-serrate and often angulately 3-5-lobed: 

 petals mainly pink, 10-12 cm. long: capsules 2.5-3 cm. long. N. M. Rare, 

 on banks of the Conestoga Creek and the Susquehanna, also locally in ponds. - 

 Limestones. SWAMP ROSE-MALLOW. 



3. H. militaris Cav. Plants 9-20 dm. tall, glabrous or nearly so: leaf -blades 

 ovate to broadly lanceolate in outline, 6-16 cm. long, serrate-dentate and 

 hastately 3-5-lobed: bractlets 1.5-2 cm. long: calyx-lobes ovate: petals pink 

 with a purple blotch: capsules 1.5-2.5 cm. long. S. Islands of the lower 

 Susquehanna. Schists. HALBERD-LEAVED ROSE-MALLOW. 



4. H. Trionum L. Plants 1-4 dm. tall, hispid: leaf -blades ovate to suborbicu- 

 lar in outline, pedately 3-5-lobed or 3-5-parted, the lobes coarsely toothed or 

 incised: bractlets about 1 cm. long: calyx-lobes triangular: petals yellow or 

 whitish with a purple or brown-purple blotch : capsules about 1.5 cm. long. 



5. Common, in cultivated fields and on roadsides. Nat. of Eu. FLOWER-OP- 



AN-HOUR. 



Order HYPERICALES. 



Herbs, shrubs, or trees. Leaves various. Flowers mostly perfect, 

 complete and regular (irregular in Violaceae), sometimes involucrate. 

 Calyx of distinct or essentially distinct sepals. Corolla of distinct petals, 

 rarely wanting. Androecium of usually numerous stamens, but sometimes 

 as few as 5. Gynoecium of several united carpels. Ovary superior, 

 mostly with parietal placentae. Fruit capsular, baccate, or drupaceous. 



Corolla regular ; petals often inequilateral. 



Styles distinct, or partially united or coherent until maturity: seeds with little 

 or no endosperm. Fam. 1. HYPERICACEAE. 



Styles wholly and permanently united : seeds with 



copious endosperm. Fam. 2. CISTACEAE. 



Corolla irregular ; petals very unequal, one of them spurred. Fam. 3. VIOLACEAE. 



FAMILY 1. HYPERICACEAE. ST. JOHN'S-WORT FAMILY. 



Herbs or shrubs. Leaves opposite: blades mostly punctate, entire or 

 nearly so, sometimes scale-like. Flowers perfect. Calyx of 4 or 5 some- 

 times unequal sepals. Corolla of 4 or 5 yellow or pink petals. Androe- 



