264 ACANTHACEAE. 



Calyx tubular or spatbe-like, laterally flattened: lobes nnequal. Corolla very 

 strongly 2-lipped: upper lip nnich longer than the minutely 3-lobed lower lip. 

 Capsule equilateral. 



1. C. coccinea (L.) Spreng. Stems 1-6 dm. tall: blades of the stem-leaves 

 narrow, often 3-8 cm. long: bracts red or scarlet, or rarely yellow: calyx-lobes 

 quadrate-oblong: corolla pale-yellow, about as long as the calyx: capsules 

 narrowly oblong, 1-1.5 cm. long. — Occasional, in sv^-amps. — Spr. and sum. — 

 Painted-cup. 



17. MELAMPYRUM [Tourn.] L. Annual slender herbs. Leaf-blades 

 entire, or toothed near the base. Flowers axillary or in leafy racemes. Calyx 

 campanulate: lobes 4, about as long as' the tube. Corolla whitish, 2-lipped: 

 upper lip arched : lower lip 3-lobed. Style elongate. Capsule beaked. — Spr. 

 and sum. 



1. M. lineare Lam. Stem 1-3 dm. tall: leaves numerous; blades linear or 

 linear-lanceolate, 1-4 cm. long: bracts ciliate-toothed near the base: upper 

 calyx-lobes mainly shorter than the tube: corolla mostly less than 10 mm. 

 long: filaments adnate to the lower part of the corolla-tulae, much longer than 

 the anthers: capsules long-beaked. — N. S. Common, in woods and thickets. — 

 Sandstones and shales, schists. — Sum. — Cow-wheat. 



18. PEDICULAEIS [Tourn.] L. Annual, biennial, or perennial, stout 

 herbs. Leaf-blades pinnatifid to pinnately parted. Elowers spicate or race- 

 mose. Calyx of 5 equally or unequally united sepals: lobes shorter than the 

 tube. Corolla strongly 2-lipped: upper lip helmet-like, laterally flattened: 

 lower lip 3-lobed. Capsule oblique or curved, beaked. — Lousewort. 



Leaf-blades pinnately parted : capsule linear-lanceolate, thrice as long as the calyx. 



1. P. canadensis. 

 Leaf-blades shallowly pinnatifid or toothed : capsules ovoid, 



little longer than the calyx. 2. P. lanceolata. 



1. P. canadensis L. Stem 1-4 dm. tall: stem-leaves 2-5 cm. long; blades 

 oblong to lanceolate: calyx 5-7 mm. long: corolla ochroleucous and tinged 

 with red or purple, about 1.5 cm. long: capsules about 2 cm. long, long- 

 beaked. — Common, in thickets and woods. — Spr. — Wood-betony. 



2. P. lanceolata Michx. Stems 3-12 dm. tall: stem-leaves 5-12 cm. long; 

 blades oblong to lanceolate: calyx fully 10 mm. long: corolla straw-colored, 

 about 2 cm. long : capsules about 1 cm. long, minutely beaked. — S. Eare, in 

 swamps. — Schists. — Late sum. 



Family 11. ACANTHACEAE. Acanthus Family. 



Herbs or shrubs. Leaves alternate, opposite, or whorled: blades 

 simple. Flowers jDerfeet, irregular. Calyx of usually 5 partly united 

 sepals. Corolla of 5 partly united petals, 2-lipi5ed or sometimes essen- 

 tially regular. Androecium of 4 didynamous, or of 2 equal stamens, one 

 pair being abortive or obsolete. Gynoecium of 2 united carpels. Ovary 

 2-eelled. Ovules commonly 2 in each cavity. Fruit a capsule, often with 

 a stipe-like base, the valves opening elastically. 



Corolla nearly regular : stamens 4. 1. Ruellia. 



Corolla 2-lipped : stamens 2. 2. Diantheea. 



1. BUELLIA [Plum.] L. Perennial caulescent herbs, or shrubs. Leaf- 

 blades entire or toothed. Elowers axillary or sometimes in terminal clusters. 



