APOCYNACEAE 1059 
3. AMSONIA Walt. Herbs. Leaves alternate: blades various. Calyx- 
lobes deltoid to lanceolate. Corolla mainly salverform, blue or purple-blue; 
lobes narrow.—About 8 species, North American and Asiatie.—BLUE-DOGBANES. 
BLUE-STARS. 
Corolla pubescent withou 
Leaf-blades glabrous or nearly so, at least at maturity: delen glabrous. 
Leaf-blades broad, ovate, oval, or broadly elliptic-lan 
late. . A. Amsonia. 
Leaf-blades narrow, elliptie, elliptic-lanceolate, lanceolate, n 
or linear- lanceolate. . A. salicifolia. 
Leaf-blades tomentose be neath, permanently Dur be- uu 
neath: follicles ee at least on the upper part. . A. ludoviciana. 
Corolla g labrous withou 1 
e NS blades elliptic-lanceolate, linear-lanceolate, 
ar, or linear- filiform, those of the upper ones at least nm 
. A. ciliata. 
sile. 
Leaves short ; blades elliptie, oval, or ovate, distinctly peti- 
led. 
. Á. rigida. 
A. Amsonia (L.) Britton. Plant 6-13 dm. tall, glabrous 
s eu dE VD relatively broad, oval to broadly elliptic- ee. 
6.5— ph em. long: eorolla purplish-blue; tu s 
— ng; lo bes shorter than the tube 
follicles” 9-12 em. long. [4. Ta bernaemon- 
tana Wal er banks 
and rich woods, various prov 
Tex., Kans., Eus Ci ura. as far N 
as Mass ae - 
salicifolia Pursh. Plant 6-19 dm 
tall x ore leaf-blades En narrow, 
lanceol ate to linear- lanceola te, 7-16 e 
oro age T rplish-blue; lo ai as 
bbc longer; follieles 8- 
Low grounds and thickets, E SO 
soil, various provinces, Fla. o Tex., Kans., 
and Va.—Spr.-sum. 
. ludoviciana Vail. Plant 5-11 dm. tall, pubescent at least when young: 
eaves Disk. vely few; blades broadly elliptie to iid opa e; 6-9 em. long, 
beneath: co Po bluish; tube 6-7 mm. long; lobes about as 
ube: follicles 8—10 em. long.—Moist grounds, ee in open woods, 
oastal Plain and adj. provinces, "Miss. to La. and Ark.—-Spr.— The flowers are 
E fragrant. 
4. A. ciliata Walt. Plant 2-8 dm. tall, often much- cu Y i es 
numerous; nn linear to linear- filiform t pper part of the t (al- 
most fi mae in A. ciliata a : : corolla Pn ca iue Boe 
6-8 mr s the ate llipti , mostly shorter than the tube: 
follicles 8-16 em. long.—Dry plum Coastal Plain, and adj. Piediont, Fla. 
, Ark., and N. C.—Spr.- 
A. rigida Shuttlw. e 8-13 dm. tall, glabrous: leaves very numerous; 
blades elliptic, oval, or ovate, 2.5-5 em. long: jen pus mm. long: 
eorolla purplish-blue; tube n mm. long; lobes as long a tube or longer: 
follicles 7-12 em. n. long ——Moist pinelands and PETS Poids poen Plain, Fla. 
and Ga.—Spr.— 
4. VINCA L. Trailing or creeping herbs. Leaves opposite. Corolla 
blue, or rarely white: tube dilated at the mouth.—About 12 species, natives of 
the Old World.—Spr.-sum.—PERIWINKLES. MYRTLES. 
