624 
in Real del Monte, where it was collected by Henke. Leaves 
1} to 2 inches long, and a line broad. Corolla 6 lines long. 
Ovarium 8 lines long. 
Narron-leaved Hexasepalum. 
Cult. 
Shrub 2 to 3 feet. 
See Borreria, p. 618. for culture and propagation. 
CLXXXVIII. DIO'DIA (from é:od0c, diodos, a passage ; the 
greater part of the species grow by way sides, hence the name). 
Lin. gen. no. 122. Gertn. fructe 1. pi 121. t. 25. Meyer, 
esseq. p. 81. Cham. et Schlecht. in Linnea. 3. p. 341. D.C. 
prod. 4. p. 561.—Diddia and Spermacoce species of authors. 
Lin. syst. Tetrdndria, Monogy'nia. Calyx with an obovate 
or ovate tube, which is usually 8-nerved; limb dentately parted ; 
teeth sometimes 2, sometimes 4, equal or unequal, cruciately 
disposed, rarely more than 4, Corolla funnel-shaped, with a 4- 
lobed limb. Stamens 4, exserted or inclosed. Style bifid or 
undivided. Fruit 2-celled, crowned by the calyx, divisible into 
2 1-seeded indehiscent parts or nuts. Seeds erect in the cells, 
furrowed in the front.—Herbs or subshrubs, all natives of Ame- 
rica except one species. Branches terete or tetragonal. Leaves 
opposite, or falsely verticillate from axillary fascicles. Flowers 
small, white, disposed in various ways in the different sections. 
Secr. I. Euprdp1a (from eu, well, and Diodia ; this section is 
considered to contain the true species of the genus). D.C. prod. 
4, p. 561. Capsules crustaceous or somewhat fleshy ; having 
the mericarps or nuts separate, without any dissepiment between 
them.—Flowers axillary, sessile, opposite ; or 2 or more on each 
side verticillate. 
* Calyx bidentate.—Diddia, Gron. Lin. Michx. Pursh. 
1 D. Virer'ntca (Lin. spec. 151.) glabrous in every part; 
stems procumbent, nearly terete; leaves lanceolate; lobes of 
stipulas linear-subulate ; corollas rather hairy inside ; fruit ovate- 
oblong, glabrous, crowned by the 2 lanceolate lobes of the calyx. 
%. F. Native from Virginia to Carolina, in humid sandy places. 
Jacq. icon. rar. 1. t. 29. Lam. ill. t. 63. Pursh, fl. sept. amer, 
1. p. 105. Stems reddish, smooth. Flowers white. 
Virginian Diodia. Fl. June, July. Clt. 1820. Pl. proc. 
2 D. rerracona (Walt. fi. virg. p. 87. Ell. sketch. 1. p. 190.) 
stems procumbent, rather angular, smoothish; leaves ovate-cor- 
date; lobes of stipulas linear-subulate ; corollas hairy inside ; 
fruit rather hairy, crowned by the 2 lobes of the calyx. Y. F. 
Native of Carolina, frequent in humid places. D. Virginica, 
Michx. fl. 1. p. 81. ex Ell. Flowers white. 
Tetragonal-stemmed Diodia. Pl. procumbent. 
3 D. uirsvu'ra (Pursh, fl. amer. sept. 1. p. 106.) plant very 
hairy; stems procumbent, tetragonal; leaves linear-lanceolate ; 
lobes of stipulas setaceous ; corolla densely bearded inside ; fruit 
ovate, hairy, crowned by the 2 linear-subulate lobes of the calyx. 
4. F. Native of Georgia,. Louisiana, and Carolina, in sandy 
fields. Ell. sketch. 1. p. 191. D. hispida, Muhl, cat. ex Ell. 
D. oblonga, Rafin. fl. lud. p. 80.2 Flowers white. Stem much 
branched. 
Hairy Diodia. Pl. procumbent. 
4 D. si’mpxex (Swartz, fl. ind. occ. 1, p. 226.) stems herba- 
ceous, erectish, smooth, simple; leaves oblong-lanceolate, gla- 
brous; lobes of stipulas linear-subulate; fruit ovate-oblong ; 
limb of calyx bidentate: teeth linear. .? F. Native of Ja- 
maica, on the higher mountains. Leaves ciliated on the margins 
while young. Flowers sessile, solitary, axillary, white. 
Simple-stemmed Diodia. PI. 1 to 14 foot. 
5 D. verricitxa‘ta (Vahl, symb. 2. p. 28.) glabrous; stem 
herbaceous, simple, erect, smooth; leaves lanceolate, attenuated 
at both ends, with scabrous margins ; stipulas ciliated; flowers 
verticillate; fruit linear, crowned by the 2 calycine teeth,— 
RUBIACEÆ. CLXXXVIII. Diona. 
Native of the Island of Santa Cruz. The leaves are said to be 
in whorles within the stipulas, hence they are probably in axillary 
fascicles. Flowers white, in axillary and terminal whorles: the 
latter the largest. It is probably a species of Borrèria from the 
terminal whorl of flowers being larger than the axillary ones. 
Whorled-flowered Diodia. Fl. June, July. Clt. 1821. Pl, 
1 foot. 
6 D. virròsa (Moc. et Sesse, fl. mex. icon. ined. ex D. C. 
prod. 4. p. 562.) stem herbaceous, declinate, tetragonal, villous; 
leaves lanceolate, acuminated, scabrous above and on the mar- 
gins, hairy beneath, and obliquely nerved; bristles of stipulas 
scabrous, longer than the sheath ; whorles axillary, sessile, 10- 
12-flowered ; fruit ovate, easily separated into 2 parts, crowned 
by the 2 teeth of the calyx.—Native of New Spain. Sperma- 
còce declinàta, Pavon, ined. Habit of Spermacòce teniior, but 
the fruit is composed of 2 indehiscent nuts, each crowned by one 
calycine tooth. 
Villous Diodia. Pl. declinate. 
# * Calyx 4-toothed. 
7 D. teres (Walt. car. p. 87.) stem terete, velvety, procum- 
bent; leaves linear-lanceolate, clothed with velvety down ; lobes 
of stipulas setaceous, longer than the fruit; corolla bearded in- 
side ; fruit ovate, downy, crowned by the 4 lanceolate calycine 
lobes. ©. H. Spermacòce diodìna, Michx. fi. amer. bor. 1. p. 
82. Torr. fi. un. st. 1. p. 170. Leaves with scabrous edges and 
keel. Flowers white, solitary, sessile. 
Terete-stemmed Diodia. P]. procumbent. 
8 D. nyssorIròLIa (Cham. et Schlecht. in Linnæa. 3. p. 342.) 
plant suffruticose, branched; branches nearly terete, hairy; 
leaves linear, acute, glabrous, glaucescent ; bristles. of stipulas 
equal in length to the fruit; whorles usually 6-flowered ; m 
obovately turbinate, downy. h.S. Native on the banks 0 
the Orinoco, near San Borja in hot places. Spermacdce hyssop!- 
folia, H. B. et Kunth, nov. gen. amer. 3. p. 342. Willd. in 
Roem. et Schultes, syst. 3. p. 532. Said to be allied to D. 
téres. Flowers white. 
Hyssop-leaved Diodia. Shrub. i 
9 `D. prostra‘ra (Swartz, fl. ind. occ. 1. p. 228.) stem sul- 
fruticose, subdivided ; branches prostrate, tetragonal, filiform, 
rather hairy at the apex; leaves linear, rather hairy, with a 
lute edges; lobes of stipulas setaceous, intermixed with pu, 
which rise from the sheath; fruit ovate, downy, crowned by the 
4 short lobes of the calyx. h. S. Native of Jamaica. D. 
procimbens, Swartz in herb. L'Her. D. prostrata, Spreng. €x- 
clusive of the species from Hispaniola. Flowers white. 
Var. B, longiseta (D. C. prod. 4. p. 562.) bristles of stipulas 
longer than the sheath; branches hispid. h. S. Native 0 
Mexico, D. prostrata, Bartl. in herb. Henke, ex D.C. 1. c. 
Prostrate Diodia. Fl. June, July. Clt. 1818. Sh. prostrate. 
10 D. Domıxor’'ysıs (D. C. prod. 4. p. 563.) glabrous: 
branches and stems procumbent, tetragonal, filiform ; leaves 
linear, with revolute margins ; bristles of stipulas stil Ne 
of St. Domingo, where it was collected by Bertero. Dio p 
prostràta, ex Hispaniola, Spreng. syst. 1. p. 406. Flowers a 
fruit unknown, and therefore the genus to which it belongs ! 
doubtful. Nearly allied to D. prostràta. 
St. Domingo Diodia. Shrub procumbent. 
11 D. sca’xvens (Swartz, fl. ind. 1. p. 230.) ai 
cose, climbing; branches very long, tetragonal, smoothish; 
leaves ovate-lanceolate, scabrous, at length rather muricate 
above; bristles of stipulas stiffish; fruit ovate-oblong, gsr 
by the 4 lanceolate calycine teeth. h. S. Native of St. 
mingo. Leaves muricated above, almost as in boragineo™ 
plants. Flowers white, sessile, 4-6-together, axillary. 
Climbing Diodia. Shrub cl. 8 to 10 feet. 
stem suffrutt- 
