498 ONAGRACEAE. (Vor. II. 
5. Gaura sinuata Nutt. Wavy-leaved Gaura. (Fig. 2607.) 
Gaura sinuata Nutt.; Ser. in DC. Prodr. 3: 
44. 1828. 
Perennial, erect or decumbent, glabrous, 
or rarely sparingly villous. Stem branched 
at the base or throughout, 1°-3° tall, usu- 
ally naked above; leaves oblanceolate to 
lanceolate, or nearly linear, sinuate- 
toothed, 1/-3/ long, acute, on winged 
petioles or nearly sessile; calyx slightly 
pubescent, its tube above the ovary fun- 
nelform, 1//-2’/ long, several times shorter 
than the linear segments; petals oblong- 
obovate, 4/’-5’’ long; stamens shorter 
than the petals; fruit about 7/’’ long, 
glabrous, 4-ridged and 4-grooved above 
the stout club-shaped pedicel. 
In dry soil, Kansas to Arkansas and Texas, 
May-July. 
6. Gaura vill6sa Torr. Woolly Gaura. (Fig. 2608.) 
\ Zi Gaura villosa Torr. Ann, Lyc. N. Y. 2: 200. 
Y pe 1827. 
Perennial, erect or nearly so, canescent 
or villous. Stems 1°-3° tall, simple or 
much branched, often naked above; 
leaves varying from lanceolate to oblan- 
ceolate or sometimes nearly linear, 1/—3/ 
long, sinuate-toothed or pinnatifid, acute 
or acuminate, sessile; calyx canescent, 
its tube above the ovary funnelform, 
1//-2’’ long, several times shorter than 
the linear acute segments; petals oblong- 
obovate, 5’’-7’/ long; stamens shorter 
than the petals; fruit about 5/’’ long, 
sparingly pubescent, the body sharply 
4-angled, abruptly narrowed into a slen- 
der filiform pedicel. 
———— 
In dry soil, Kansas to Arkansas and Texas. 
June-Sept. 
19. STENOSIPHON Spach, Nouv. Ann. Mus. Par. 4: 326. 1835. 
Erect perennial herbs, with slender upright branches, alternate sessile narrow leaves, 
and white sessile flowers in narrow terminal spikes. Calyx-tube filiform, much prolonged 
beyond the ovary, 4-lobed. Petals 4, clawed, unequal. Stamens 8, declined, not appendaged 
by scales at the base; filaments filiform. Ovary 1-celled; united styles slender; stigma 
4-lobed, subtended by a cup-like border as in Gaura; ovules commonly 4. Fruit 8-ribbed, 
indehiscent, 1-celled, 1-seeded. Seed pendulous. [Greek, referring to the slender calyx- 
tube. ] 
A monotypic genus of the south-central United States. 
