1086 ACANTHACEAE 
lobes narrowly lanceolate, as long as the tube or longer: corolla red or crimson, 2-2.5 cm. 
long, curved ; lips nearly as long as the tube or much shorter: capsules 7-8 mm. long. 
In sand, Florida. Also in the West Indies and Central America. Throughout the year. 
2. Diapedium brachiatum (Pursh.) Kuntze. Foliage glabrous or sparingly pilose. 
Stems 3-7 dm. tall, with wide-spreading branches : leaf-blades ovate to oblong-ovate, 2-10 
cm. long, acute or somewhat acuminate, undulate, slender-petioled : bracts obovate to 
oblong-spatulate, more or less strongly mucronate, 4-8 mm. long: calyx 4-5 mm. long; 
lobes linear-subulate: corolla pink to purple, 1.5-2 cm. long; lips about as long as the 
tube, the upper one 3-toothed : capsules about 5 mm. long. 
In dry soil, North Carolina to Florida and Texas. Summer and fall. 
3. Diapedium attenuàtum (A. Gray) Heller. Similar to D. brachiatum in habit. 
Stems more or less branched and spreading, 4-8 dm. long: leaf-blades lanceolate or ovate- 
lanceolate, 4-8 cm. long, markedly acuminate, slender-petioled : bracts acuminate or cuspi- 
date-acuminate: calyx 2-3 mm. long; lobes subulate: corolla pinkish purple, about 1 cm. 
long: capsules 4-5 mm. long. 
On prairies, Arkansas and eastern Texas. Summer and fall. 
8. ANISACANTHUS Nees. 
Shrubs, with glabrous or pubescent foliage. Leaves opposite, often clustered : blades 
broadest below the middle, entire. Flower-spikes terminal, one-sided, interrupted. Calyx 
sessile: lobes 5, narrow, nearly equal, acute or acuminate. Corolla red or purplish : tube 
slender, elongated, straight or slightly curved, dilated above, 2-lipped : upper lip narrow, 
entire: lower lip 3-parted. Stamens 2, as long as the corolla or longer: filaments adnate 
to above the middle of the tube: anthers 2-celled. Staminodia wanting. Ovary 2-celled. 
Stigmas capitate. Ovules 2 in each cavity. Capsule contracted into a long stipe-like base. 
Seeds 4, flat, wrinkled, orbicular. 
1l. Anisacanthus Wrightii (Torr.) A. Gray. Foliage puberulent or glabrate. 
Stems 6-12 dm. tall, branching : leaf-blades lanceolate, to oblong- or ovate-lanceolate, 2-5 
em. long, acute or acuminate, abruptly narrowed into short slender petioles or rounded at 
the base: racemes slender, panicled: calyx 4-5 mm. long; lobes oblong to oblong-lanceo- 
late, longer than the tube: corolla purplish red or vermilion, 3-4 cm. long ; lips shorter 
than the tube, the upper one notched, the lower 3-cleft ; lobes narrow: capsules 2 cm. long, 
stipe-like base longer than the acute body. 
In rich soil or thickets, Texas. Spring to fall. 
9. SIPHONOGLOSSA Oersted. 
Shrubs or shrubby herbs, with diffuse stems. Leaves opposite: blades entire. Flow- 
ers solitary in the axils. Calyx sessile or nearly so: lobes 4, narrow. Corolla white, blue 
or purple, 2-lipped : tube slender, elongated, terete: upper lip entire or 2-cleft : lower lip 
spreading, 3-lobed. Stamens included or at least surpassed by the upper lip : filaments ad- 
nate to the throat of the corolla-tube: anthers 2-celled, the sacs unequally inserted, one 
lower. Staminodia wanting. Ovary 2-celled. Stigmas slightly 2-lobed. Ovules 2 in 
each cavity. Capsule contracted into a solid stipe-like base. Seeds 4 or fewer. 
Corolla 1-2 cm. long: calyx 3-6 mm. long. 
Foliage glabrous or nearly so: calyx 3 mm. long: corolla less than 15 mm. long. 1. S. Dintoracantbes 
Foliage pilose-hirsute: calyx 5-6 mm. long: corolla over 15 mm. long. 2. S. Pilosella. 
Corolla 3-4 em. long: calyx 7-9 mm. long. 8. S. longiflora. 
1. Siphonoglossa Dipteracántha (Nees) Heller. Stems branched at the base, rr 
branches ascending or spreading, 5-30 cm. long, slender, nearly glabrous: leaf-blades 
oblong, varying to somewhat obovate or ovate, or sometimes {oval, 3-12 cm. long, obtuse 
often obscurely toothed, glabrous or sparingly pubescent beneath and ciliate near the base, 
short-petioled': bracts oblong or nearly so: bractlets oblong-spatulate : calyx about 3 guy 
long ; lobes linear-lanceolate, acute or somewhat acuminate, ciliolate: corolla pale purple 
or white, 12-13 mm. long; tube about twice as long as the lips, pubescent above the 
dde the upper lip notched, the lower lip with obtuse lateral lobes : capsules 5-6 mm. 
ong. 
In sandy soil, southeastern Texas and adjacent Mexico. Spring and summer. 
2. Siphonoglossa Pilosélla (Nees) Torr. Stem branched at the base, the pires: 
pilose-hirsute, 3-20 cm. long: leaf-blades spatulate to oval or ovate or sometimes etapin 
1-1.5 em. long, obtuse or acute, narrowed into short petioles or nearly sessile: calyx 
E 
