272 THE FLORA. 
1S. gentianoi’des. Gentian C. Leaves linear, rigid, longer than the internodes. 
Flowers 8-10-parted, bright flesh-color, clustered. 8. 
28. chloroi’des. Chlora C. Leaves lanceolate. Branches few, alternate, each 
bearing at top a solitary, 7-12-parted, bright purple flower. E. 
8 8. calyco’sa. Cup C. Calyx leaf, as large as the 5-6-parted corolla. 8. 
4 8. panicula’ta. Punicled C, Sepals linear, half as long as 5-parted cor. S. 
5 8. gra/cilis. Slender C. Leaves ovate to linear. Sepals bristle-form, as long as 
the corolla. M.S. 
6 &. stella’ris, Starry C. Leaves lance-obovate. Sepals linear, much shorter than 
corolla. « 
7 S.corymbo’sa. Corymbed C. Leaves lanceolate, 3-veined. Calyx segments 
linear, thrice longer than its tube, half as long as the corolla. N.-J. 8. 
8 S, macrophyl’la, Leaves 5-veined, cusp-pointed. Sepals shorter than calyx 
tube. 8. 
9S. angularis. Angled C. Stem square, with winged angles. Leaves ovate, 
clasping, 5-veined. Flowers-many, rose-red, the star greenish. Wet. ¢. 
10 S, brachia’ta. Prairie C. Stem square, slender, joints 2-4 times longer than the 
sessile, lance-linear leaves. Panicle oblong. Corolla 6-parted, the star 
yellow. W.8. 
Orver XCVI. APOCYNACEH. Dogbanes. 
Plants with a milky juice, entire and mostly opposite leaves ; 
Jlowers 5-parted and regular, with the corolla twisted in the bud; 
stamens 5, with distinct filaments, anthers sometimes slightly united ; 
ovaries 2, distinct, but with their stigmas united at top of the styles; 
Jruit 2 follicles containing several or many albuminous seeds. 
Analysis of the Genera. 
* Herbs erect, 2-4f. high, the flowers in cymes....a 
* Shrubs twining or trailing, with opposite leaves....b 
* Shrubs erect, 8-6f. high, with the leaves in whorls of 8....¢ 
a Cor. bell-shaped, whitish. Style none. Sds. silky. Dog’s-bane. Apoc’ynum. 1 
a Corolla funnel-form, bluish. Style 1. Lvs. scattered. -Amson. AMso’NIA. 
b Fis, solitary, blue. Throat 5-angled. Lvs, evergreen. + Periwinkle. Vin’ca. 
b Flowers in cymes, yellow, small. Lvs. petiolate. Wet. South. Forsrero’nia. 
= Leaves thick, evergreen. Flowers large, rose-colored. Oleander, Nu’R1um. 
APOO'YNUM. Dog’s-bane. 
Stamens shorter than the corolla, arising from its base, and alternate 
with 5 glandular teeth. Anthers arrow-shaped, cohering to the stigmas 
