134 NATURAL HISTORY OF PLANTS. 
oppositipetalous ; style stigmatiferous at apex, subentire or to a 
greater or less distance 5-fid or 5-lobed ; ovules 2 in each cell, in- 
serted at base of internal angle, ascendent; micropyle extrorse, 
inferior. Capsule subglobose echinate ; carpels separating at matu- 
rity, inwardly 2-valved 1-spermous. Seeds exalbuminous ; embryo 
rather fleshy; cotyledons reflexed at the summit of tigella, and 
much spirally convolute round it.—Undershrubs, erect or scandent 
sarmentose; branches often narrow aculeate; leaves alternate sti- 
pulate, of various forms, sometimes sagittate ; flowers small in 
pedunculate cymes, usually umbelliferous, peduncle lateral to the 
leaves, connate with the branchlets, more or less elevated (47 the 
Tropical regions of the Globe). See p. 78. 
24? Ayenia L.'—Flowers nearly of Buettneria ; cucullus of 
petals dorsally naked, or glandular stipitate enlarged. Stamens 5 soli- 
tary, sterile, between lobes of androceum ; anthers 3-celled.2 Germen, 
ovules, capsule and seeds nearly of Buettneria.—Herbs or undershrubs, 
hairs stellate hirsute, tomentose, or glabrescent; leaves serrate ; 
flowers in axillary or lateral cymes’ (W'arm America’). 
25. Commersonia Forsr—Flowers nearly of Buettneria ; base of 
petals wide concave, upper part ligulate. Staminodes alternipe- 
talous, 3-fid or 3-nate, elongate; anthers fertile, 2-celled, separate. 
Germen 5-celled ; ovules ascendent, 2-6 in each cell (or more rarely 
more) 2-seriate; styles distinct or 
height. Capsule loculicidal, hairs 
ascendent ; embryo albuminous ; 
coalescing to a greater or less 
generally flaccid, echinate ; seeds 
cotyledons foliaceous.—Trees or 
shrubs, leaves often oblique at base, sometimes cordate, incised or 

1 Gen., n. 1020.—J., Gen., 278—GÆRTN, sér. 4, xvii. 333.—Watp., Rep, ii. 796; 
Fruct., i, 302, t. 79.—DC., Prodr., i. 487.— 
ENDL., Gen., n. 5332.—B. H., Gen., 225, n. 31. 
— Dayenia Mrt1,, Icon., t. 118. 
2 If anthers 2; one 2-celled; the other 1- 
celled? If anthers 3, 1-celled confluent ? 
3 Gen. scarcely to be distinguished (except 
by habit) from Buettneria, of which, perhaps, it 
would be better considered a section. 
4 Spec. 7, 8, Cav., Diss., v. 289, t. 147.— 
Lart., It, 200.—Tr, & Px., in Ann. Se, Nat., 
Ann., iv. 323; vii. 481. 
5 Char. Gen., 43, t. 22.—J., Gen. 428.— 
GÆRIN,, Fruct., ii. 79, t. 94.—Lamr., Jil, 
t. 18.—A. S. H., in Ann. Se. Nat., sér. 1, vi. 
134.—J. Gay, in Mem. Mus., x. 205, t. 14, 15. 
—DC., Prodr., i,486.—Spracu, Suit. à Buffon, 
iii, 487.—ENDL., Gen., n. 5329.—B. H., Gen., 
226, 984, n. 34.—H. BN., in Payer Fam. Nat., 
292. 
