GENUS 6. MILKWEED FAMILY. 39 
6. Vinedbxicum Snortii (A. Gray) Britton. Short’s Vincetoxicum. Fig. 3421. 
Gonolobus obliquus yar. Shertii A. Gray, Syn. Fl. 2: 
Part 1, 104. 1878. 
G. Shortii A. Gray, loc. cit. Rd. 2, 404. 1886. 
V. Shortii Britton, Mem, Torr. Club 5: 266. 1894. 
Stem pubescent, or hirsute with spreading 
hairs. Leaves downy, broadly ovate, acute or 
‘short-acuminate at the apex, deeply cordate at 
the base and when old with a narrow or closed 
sinus, 4-7’ long, 13’-54’ wide; petioles stout, 
pubescent, 14’-3’ long; peduncles usually longer 
than the petioles; umbels several-flowered ; pedi- 
cels 1’ long or more; corolla oblong-conic in 
the bud, dark crimson-purple, its lobes linear, 
5-7” long, 5-7 times as long as the hirsute 
calyx; crown cup-shaped, fleshy, as high as the 
anthers, its margin about to-toothed, the alter- 
nate teeth thinner and longer, emarginate or 
2-parted, the others broader, thicker, with an 
obscure internal crest or ridge below the sum- 
‘mit; follicles warty. 
In thickets, Pennsylvania to eastern Kentucky 
and Georgia. Flowers with the odor of the straw- 
berry-shrub, June—Aug. 
7. Vincetoxicum Baldwinianum (Sweet) Britton. Baldwin’s Vincetoxicum. 
Fig. 3422. 
Gonolobus Baldwinianus Sweet; A. Gray, Syn. Fl. 2: 
Part 1, 104. 1876. 
Vincetoxicum Baldwinianum Britton, Mem. Torr. Club 
5: 265. 18094. 
Stem pubescent and hirsute. Leaves downy, broadly 
ovate, acute, or short-acuminate at the apex, deeply 
cordate at the base, 3-0’ long, or more; petioles hir- 
sute, 1-2’ long; peduncles 6-12’ long, usually longer 
than the pedicels; umbels several-many-flowered; 
corolla white or cream-color, the lobes thin, oblong, 
or becoming spatulate, 4”—-5’" long; crown thin, the 5 
broader lobes quadrate, emarginate, or obscurely 
toothed; in their sinuses a pair of very slender 
linear-subulate teeth of more than double their 
length, much surpassing the stigma. : 
Missouri and Arkansas to Georgia. May-June. 
Periploca graéca L., silk-vine, a handsome woody 
climber, with glabrous ovate-oblong leaves and brown- 
ish flowers in umbels, the obtuse corolla-segments vil- 
lous on the inner side has been collected as an escape 
from cultivation, 
Family 19. DICHONDRACEAE Dumort. Anal. Fam. 20, 25. 1829. 
DicHonpra FaMILy. , 
Consists only of the following genus: 
1. DICHONDRA Forst. Char. Gen. Pl. 39. pl. 40. 1776. 
Prostrate or creeping slender annual (sometimes perennial?) silky-pubescent or glabrous 
herbs, with nearly orbicular cordate or reniform petioled entire leaves, and very small soli- 
tary axillary peduncled flowers. Sepals neariy equal, oblong or spatulate. Corolla open- 
campanulate, deeply 5-parted, the lobes induplicate in the bud. Stamens shorter than the 
corolla; filaments filiform. Ovary villous, deeply 2-parted, each lobe 2-celled; styles 2, simple, 
arising from the bases of the ovary-lobes; stigmas capitate. Fruit of 2 pubescent 2-valved 
or indehiscent 1-2-seeded capsules. [Greek, two-grained, referring to the capsules.] 
About 5 species, natives of warm and tropical regions. Besides the following, another occurs 
in the southwest. Type species: Dichondra repens Forst. 
