CX. URTICACER. 345 
filiform, villous; ovule erect or ascending. Achene either 
woolly or shining.— Wedd. Urtic. p. 538. t. 19 A. 
Perennial herbs or undershrubs, chiefly African. Stems smooth. Leaves 
alternate or opposite, serrate, destitute of hooked hairs. Involucre toothed, 
pubescent or tomentose.—D. ambigua, Wedd. (Parietaria urticefolia, 
E. M.), is the only Cape species. 
6. DIDYMODOXA, E. Mey. 
Flowers monececious, the sexes mixed together, not involu- 
erate.-—Male: Calyx monophyllous, bract-like, shortly tubular 
at base; the limb hood-like, acuminate; the margins ciliate, 
closely cohering in the lanceolate bud. Stamen 1.—Female : 
Calyx wanting or adhering to ovary. Ovary straight, ovate, 
tipped with a capitate or shortly filiform, villous, often incurved 
stigma; ovule erect. Achene subobliquely ovate, compressed, 
one margin keeled or crested.— Wedd. Urtic. p. 547. t. 15 B. 
Weak, procumbent, branching annuals, growing in shady places ; for- 
merly referred to Parietaria. Leaves alternate, crenate or quite entire, 3- 
nerved ; stipules free, petiolar, scarious, ciliate. Glomerules 5—20-flowered. 
Flowers small, green.—3 species, 2 of them Hastern. 
SusporpER 2. Celtideze. (Gen. 7-9.) 
7. CELTIS, Tourn. 
Flowers polygamous, dimorphous. — Male: Calyx 4-5- 
parted; the segments concave, strongly imbricate in bud. 
Stamens 4-5, inserted under a rudimentary, pilose cushion ; 
anthers included, gibbous at base, introrse.—Hermaphrodite : 
Calyx deciduous. Stamens as in the male. Ovary ona pilose 
disk ; stigmas 2, deciduous. Berry nude, equal-sided.—Hndl. 
Gen. n. 1851; Planch.in Ann. Se. Nat. Ser. 3. x. p. 263. 
Trees and shrubs with alternate, 3-nerved leaves, often serrulate, and 
axillary small flowers.—4 Cape species, in the Eastern districts and at 
Natal. 
8. SPONTA, Comm. 
Flowers polygamous, 3-morphous.—Male: Calyx 5-parted ; 
the lobes subvalvate-induplhicate in bud; the margins minutely 
overlapping. Anthers at length exserted, the cells not con- 
spicuously gibbous at base, introrse.—Hermaphrodite: Calyx 
of male, the lobes less inflexed at edges.—Female: Calyx- 
lobes flattish, imbricate at base. Berry minute, crowned by 
2 feathery styles, and seated in the persistent calyx.—Endl. 
Gen. n. 1852. Planch. l.c. p. 264. 
Tropical and subtropical trees. Leaves 3-nerved, mostly greyish and pu- 
bescent, serrate. Flowers small, in axillary cymes ; the males and herma- 
phrodite often together, the female on separate twigs.—2 species at Natal. 
