1114 RUBIACEAE 
16. MITCHELLA L. 
Perennial evergreen herbs, with creeping stems. Leaves opposite : blades flat, entire ; 
stipules minute. Flowers perfect, dimorphous, 2 together on axillary or terminal pe- 
duncles. Sepals 4 or sometimes 3-6. Corolla white or pink, funnelform ; lobes mostly 4, 
spreading or recurved, pubescent within. Stamens as many as the corolla-lobes : filaments 
short and united. Ovary 4-celled : styles elongated and exserted or short and included. 
Stigmas 4, slender. Ovule solitary in each cavity, erect, anatropous. Fruit of 2 united 
drupelets, containing usually 8 nutlets. Testa firm. Endosperm cartilaginous. 
1. Mitchella répens L. Foliage glabrous or nearly so. Stems prostrate or creeping, 
1-4 dm. long, usually forming mats: leaf-blades thickish, ovate to suborbicular or some- 
times elliptic, 8-30 mm. long, usually truncate or subcordate at the base; petioles j as 
long as the blades or shorter: peduncles 1-5 mm. long: sepals much shorter than the 
hypanthium: corolla white or pinkish, 10-13 mm. long; tube dilated above the middle ; 
lobes ovate or oblong, spreading or slightly recurved: fruit suborbicular, 7-10 mm. in 
diameter, bright red or white, somewhat aromatic. 
In woods, Nova Scotia to Minnesota, Florida and Texas. Spring to fall. PARTRIDGE-BERRY. 
TWIN-BERRY. y : 
17. MORINDA L. 
Shrubs or trees, with upright or climbing stems. Leaves opposite or rarely whorled 
in 3's: blades membranous. Flowers mostly perfect, in axillary or terminal peduncled 
clusters. Flowers aggregated and coalescent into a head. Calyx a truncate or shallowly 
toothed, persistent border. Corolla white or crimson, funnelform or salverform : lobes 5 
or rarely 4-7, valvate, leathery. Stamens 5 or rarely 4-7: filaments short, adnate to the 
throat of the corolla. Ovary 2-celled or imperfectly 4-celled : styles united, sometimes 
pubescent: stigmas slender. Ovules solitary in each cavity. Fruit a syncarp. Seeds 
obovoid or reniform. Testa membranous. Endosperm fleshy. 
1. Morinda Roioc L. A branching shrub, with prostrate, or somewhat climbing 
stems, the foliage glabrous or nearly so. Leaf-blades oblong to cuneate, 5-10 cm. long, 
abruptly pointed, undulate, thinnish, short-petioled : flowers aggregated into a dense sessile 
or short-peduncled head: corolla crimson, 6-8 mm. long; tube gradually dilated ; lobes 
oblong to oblong-lanceolate, shorter than the tube: fruit of 2-4 1-seeded carpels united 
into a fleshy head. 
On or near the coast, peninsular Florida and the Keys. Also in the West Indies. 
18. RICHARDIA L. ; 
Annual or perennial herbs, with pubescent foliage and terete stems. Leaves opposite : 
blades flat, entire: stipules fringed. Flowers mostly perfect, in terminal involucrate 
clusters. Hypanthium turbinate to subglobose. Sepals 4-8, more or less persistent. 
Corolla white or pink, funnelform, glabrous in the throat: lobes 3-5, valvate. Stamens 
adnate to the throat of the corolla-tube. Disk inconspicuons. Ovary 3-4-celled : sty ~ 
united, filiform: stigmas 3-4. Ovule solitary in each cavity, amphitropous. Fruit nis 
carpels, crowned with the sepals. Seeds 2-grooved on the lower face. Endosperm horny. 
. . : T scabra. P 
Numen t TR n Den Dote E freins 
1l. Richardia scàbra St. Hil. Annual. Stems sparingly branched and ont ic 
copiously branched and diffusely spreading, 1-4 dm. long: leaf-blades oblong or e a d 
to lanceolate or ovate, 2-8 cm. long, acute or somewhat acuminate, undulate, narro ua 
into short margined petioles or nearly sessile: clusters depressed : involucre A 2 — s: 
pe of bracts : sepals lanceolate or ovate-lanceolate, 1-1.5 mm. long, about as long ular- 
ypanthium : corolla 4-6 mm. long:. tube funnelform ; lobes 6, ‘triangular or trang 
lanceolate, more or less ciliate, much shorter than the tube. 
In sandy soil, South Carolina to Florida, Texas, Mexico and South Americ 
tropical America. iffusely 
2. Richardia Brasiliénsis (Moq.) Gomez. Perennial. Stems more or - gw rd 
branched from the base, the branches spreading or prostrate, 1-4 dm. long: 'ea short- 
elliptic or oblong, 1.5-4 cm. long, acute or somewhat acuminate at both ends, entire, dee 
petioled : clusters dense, closely sessile: sepals ovate or oblong-ovate, about Emm. 
a. Introduced from 
