ACANTHACEAE 1087 
, 
mm. long; lobes subulate, about 3 as long as the subtending bracts: corolla pale blue or 
purple, 1.6-2 cm. long ; tube slender, about twice as long as the tips, the upper lip notched, 
the lower one longer, its 3 lobes oblong or obovate-oblong : capsules 8-10 mm. long. 
In dry ground, Texas to New Mexico and adjacent Mexico. Spring and summer. 
3. Siphonoglossa longiflóra ( Torr.) A. Gray. Stems branched at the base, the 
branches 1-2.5 dm. tall, cinereous-puberulent, erect or erect-ascending : leaf-blades lanceo- 
late, 2-4 cm. long, blunt, undulate, often cuneate at the base, short-petioled : calyx 7-9 
mm. long: lobes subulate-linear, about as long as the subtending bracts: corolla wits or 
yellowish white, 3-4 cm. long ; tube slenderly cylindric, about twice as long as the lips, 
the upper lip notched, the lower lip with 3 lobes each about as large as the upper lip : 
capsules 8-9 mm. long. 
In dry or rocky soil, Texas to Arizona and Sonora. Summer. 
10. JUSTICIA L. 
Perennial caulescent herbs or rarely shrubs, various in habit. ` Leaves opposite: blades 
entire. Flowers solitary, clustered or cymose in the axils of the bracts. Calyx-lobes 4-5, 
narrow, equal or nearly so. Corolla white, pink, violet or red, 2 lipped : tube very short, 
straight or curved, manifestly dilated into a throat: upper lip erect or incurved, entire or 
2-cleft: lower lip spreading, 3-lobed. Stamens 2, not surpassing the upper lip: filaments 
adnate to the mouth of the corolla-tube : anthers 2-celled ; sacs separate, oblique. Stam- 
inodia wanting. Ovary 2-celled. Stigma entire or 2-toothed. Ovules 2 in each cavity, 
Capsule 8 more or less flattened, contracted into a solid stipe-like base. Seeds 4 or fewer. 
smooth or variously roughened. 
1. Justicia Wrightii A. Gray. Stems branched at the woody base, the branches 
erect or ascending, 0.5-2 dm. tall, cinereous-pubescent : leaf-blades firm, those of the lower 
leaves obovate, barely 1 cm. long, those of the upper leaves lanceolate or linear-lanceolate, 
3-7 mm. long, entire, mucronate-acute: flowers solitary and sessile in the upper axils: 
bracts similar to the accompanying leaves: corolla purplish, 8-9 mm. long ; tube rather 
campanulate ; upper lip with two narrow lobes ; lower lip with oval-obovate lobes. 
On limestone ridges, mainly along the San Felipe River, Texas. Spring and summer. 
11. YEATESIA Small. 
Perennial caulescent herbs, with bright green foliage. Leaves opposite: blades en- 
tire. Spikes dense, conspicuously bracted. Calyx sessile: lobes slender, erect. Corolla 
white, slightly 2-lipped : tube slender, somewhat dilated into a throat: lobes 4, nearly 
equal, flat. Stamens 2: anthers 2-celled ; sacs unequally inserted and one slightly 
oblique. Staminodia wanting. Ovary 2-celled. Stigma capitate. Ovules two in each 
cavity. Capsule narrowed into a stipe-like base. Seeds glabrous, minutely wrinkled. 
1. Yeatesia viridifldra (Nees) Small. Foliage nearly glabrous, or puberulent, bright 
green. Stems 2-6 dm. tall, branched, constricted above each node : leaf-blades elliptic or 
elliptic-lanceolate, 5-15 cm. long, acuminate at both ends, undulate, bracts ovate to ob- 
ovate, 1-1.5 cm. long, ciliate: calyx glabrous or nearly so ; lobes linear-subulate, 4-5 mm. 
long : corolla white or pink, 1.5 cm. long, the lower lip 3-lobed, spreading, the upper 
reflexed, barely lobed: stamens exserted: capsule 1 cm. long, the stipe-like base shorter 
than the body. [Justicia laetevirens Buckl., not Vahl. Rhytoglossa viridiflora Nees. ] 
In shaded soil, Tennessee to Georgia, Florida and Texas. Summer. 
12. DIANTHERA L. 
Perennial caulescent herbs, with glabrous or pubescent foliage. Leaves opposite : 
blades entire or rarely toothed. Flowers several, on axillary peduncles. Calyx-lobes 
4-5, slender. Corolla white or colored, strongly 2-lipped : tube variable in length, straight 
or curved: upper lip erect or ascending, entire or 2-tooth: lower lip spreading, 3-lobed. 
Stamens 2: filaments adnate to near the mouth of the corolla-tube, not surpassing the 
upper lip: anthers 2-celled, the sacs separated by a broad connective. Ovary 2-celled. 
Stigma entire or 2-lobed. Ovules 2 in each cavity. Capsule contracted into a stipe-like 
base. Seeds 4 or fewer, flat, ovate to suborbicular. WATER WILLOW. 
