RUBIACEAX. (MADDER FAMILY.) 173 
$. BORRERIA. Carpels 2, both open on the inner face. Flowers clustered. 
4. DIODIA. Carpels 2-3, bony and closed. Style 2-cleft. Albumen fleshy. 
5. ERNODEA. Carpels 2, somewhat fleshy, closed, Style entire. Albumen horny. 
* * Shrubs. Fruit dry. Flowers in globular peduncled heads. 
6. CEPHALANTHUS. Carpels 2- 4, separating at the base, closed. 
* * * Shrubs. Fruit fleshy or pulpy. Flowers mostly axillary. 
+ Ovaries united, forming a compound berry in fruit. 
T. MITCHELLA. Flowers by pairs. Stamens 4. Berry 4-seeded. 
8. MORINDA. Flowers numerous. Stamens D. Berry 1-seeded. 
+ + Ovaries and fruit separate. 
++ Albumen horny. 
9. CHIOCOCCA. Fruit flattened, even. Stigma entire. Seeds suspended. 
10. PSYCHOTRIA. Fruit ribbed. Stigma 2-lobed. Seeds erect. 
++ ++ Albumen fleshy. 
11. STRUMPFIA. Corolla bell-shaped. Anthers subsessile, united. Leaves whorled. 
12. GUETTARDA. Corolla salver-form. Anthers subsessile, separate. 
18. ERITHALIS. Corolla subrotate. Filaments slender. 
Susorper IL. CINCHONEZ. Ovules and seeds numerous in the 
cells. Calyx-tube adherent to the ovary. Leaves opposite. 
i : * Fruit baccate, indehiscent. 
l4. HAMELIA. Fruit 5-celled. Stigma entire. 
15. RANDIA. Fruit 2-celled. Stigma 2-lobed. 
4 * * Fruit capsular, loculicidally dehiscent. 
lé. PINCKNEYA. Shrub. Flowers cymose, terminal. Seeds winged. 
li. EXOSTEMMA. Shrubs. Flowers solitary, axillary. Seeds winged. 
18. OLDENLANDIA: Herbs. Capsule often free from the calyx above. Seeds wingless. 
Susorper III. LOGANIEZE. Ovules and seeds numerous in the 
cells. Calyx free from the ovary. Fruit capsular. Leaves opposite. 
* Herbs. 
19. SPIGELIA. Corolla tubular. Style single, jointed. 
MITREOLA. Corolla short, 5-lobed. Styles 2, united above. 
21. POLYPREMUM. Corolla short, 4-lobed, Style single. 
à * * Evergreen woody vines. 
22. GELSEMIUM. Corolla campanulate. Seed winged. 
1. GALIUM, L. 
Calyx-teeth obsolete. Corolla rotate, 3-4-lobed. Stamens 3-4. Styles 2, 
United at the base, Stigma capitate. Fruit double, separating into two 1-seeded 
carpels. Albumen horny. — Slender herbs, with square stems and whorled 
leaves, Flowers minute. — The following species are all perennials. 
a * Fruit baccate: peduncles 1 - 3-flowered : leaves 4 in a whorl. n 
l. G. hispidulum, Michx. Stems much branched, slightly roughened, — 
; | at the joints; leaves small (2" — 6"), rigid, lanceolate-ovate, rough on the 
Mmi sandy soil n 
and 
