658 GESNERIACE. 
Cult. For culture and propagation see Rytidophylium, 
p. 650. 
Subtribe IT. 
DIDYMOCA’RPE (the plants contained in this subtribe 
agree with the genus Didymocárpus, in the siliquose capsules 
and naked seeds.) All as in Trichospòreæ, except the seeds, 
which are not furnished with any hair at either end. : 
XXI. STREPTOCA'RPUS (from crpezroc, streptos, twist- 
ed; and xapzoc, carpos, a fruit; the capsule is spirally twisted.) 
(fig. 72. f.) Lindl. bot. reg. 
1173. Didymocárpus species, FIG. 72. 
Hook. 
Liy. syst. JDiándria, Mono- 
gynia. Calyx 5-parted (fig. 72. 
a.) Corolla tubularly funnel- 
shaped ; throat ventricose ; limb 
oblique, 5-lobed, nearly equal. 
Stamens 4, the 2 anterior ones 
fertile, and the 2 sterile ones 
tubercle-formed (f. 72. d.); 
anthers glabrous, connate (f. 
72. c.): cells divaricate. Style 
compressed; stigma bilabiately 
dilated : lips reniform. Capsule 
siliquose, spirally twisted ; pla- 
centas bilamellate, conniving in 
the middle; margins revolute, 
seminiferous. Seeds numerous, 
minute, glabrous.—A tufted, 
stemless herb. Leaves wrinkled, flat on the ground. Peduncles 
radical, 1-flowered, bibracteate above the middle. Corollas 
pale blue. 
1 S. Re’xn (Lindl. l. c.) %.S. Native of South Africa, 
in the lands of Mr. G. Rex, at the Knysna, where it was disco- 
vered by Mr. Bowie. Didymocárpus Réxii, Hook. exot. fl. t. 
227. Leaves ovate, crenated, 6-9 inches long, and 3-4 broad. 
Peduncles on the axils of the leaves. Corolla 2 inches long, 
pubescent. (Fig. 72.) 
Rex's Streptocarpus. Fl. Year. Clt. 1824.? PI. 1 foot. 
Cult. A light rich earth or vegetable mould is a good soil for 
this plant ; which is readily increased by division. 
XXII. DIDYMOCA'RPUS (from óvpoc, didymos, twin ; 
and «agmoc, karpos, a fruit; in reference to the twin capsules.) 
Wall. ex Jack. in Lin. trans. 14. p. 32. D. Don, prod. fl. 
nep. p. 122. 
Lin. syst.  Didynàmia, Angiospérmia. Calyx 5-cleft. Co- 
rolla funnel-shaped, with a ventricose throat; limb 5-lobed ; 
upper lip the shortest. . Stamens 4, rarely 5, 2 of which 
are antheriferous, inclosed : sterile ones very short; anthers ad- 
nate: cells transverse. Stigma lateral, flattish, obtuse. Cap- 
sule silique-formed, falsely 4-celled, 2-valved; valves opening 
elastically from the dorsal suture. Lobes of dissepiment with 
revolute, seminiferous edges. Seeds naked, pendulous, ovate. 
Perennial, stemless, or caulescent herbs. Roots tufted, fibrous. 
Leaves usually cordate, crenated, wrinkled, hairy. Stems or 
scapes erect, simple. Flowers rose-coloured or purple, involu- 
crated, disposed in dichotomous umbels. 
§ 1. ScarYcerx. — Stemless, scapigerous plants, with radical 
leaves. 
1 D. uacRornY'rLA (Wall. in litt. ex D. Don, prod. fl. nep. 
XXI. SrnzPrOCARPUS. 
XXII. DrpYMOCARPUS. ` 
p. 122.) leaves cordate-oval, dentately serrated or crenated, vil- 
lous above and nearly naked beneath; scapes glabrous, much 
shorter than the leaves; involucra and involucels roundish, 
quite entire, connate at the base; calycine segments roundish, 
Y.G. Native of Nipaul and Kamaon; from Jurreepanee up- 
wards, towards Mussooree, and near Simla. Royle, ill. himal. 
t. 70. f. 2. Leaves large, usually solitary, 3-7 inches long, and 
23 or 5 inches broad. Petioles 3-4 inches long. Scapes equal 
in height to the petioles, rarely higher. Flowers and involu- 
cels purple. 
Long-leaved Didymocarpus. Pl. 4 to $ foot. 
2 D. cinerea (D. Don, prod. fl. nep. p. 122.) leaves cor- 
date-oval, obtuse, unequally crenated, clothed with cinereous 
tomentum above, as well as the petioles; scapes mealy, few- 
flowered, shorter than the leaves; involucra a little toothed, 
and are, as well as the involucels, clothed with greyish tomen- 
tum; calycine segments ovate, acute. 4. G. 1 Native of Ni- 
paul. Leaves 1} to 2 inches long, about equal in length to the 
petioles, grey on both surfaces. Scapes filiform. Flowers 
large, purple. : 
Cinereous Didymocarpus. PI. 3 foot. ; : 
3 D. rrca`ra (D. Don, l. c.) leaves twin, nearly sessile, orbi- 
cularly cordate, fleshy, rugosely plicate above, silky white, and 
lacunosely veined beneath, with revolute edges ; scapes pubes- 
cent, many-flowered. 2%.G. Native of Nipaul. Root much 
branched, fibrous, densely tufted. Leaves an inch long. Scapes 
5 inches high. 
Plicate-leaved Didymocarpus. PI. 3 foot. 
§ 2. Caulescéntes. Caulescent plants. 
4 D. vitrdsa (D. Don, l. c. p. 123.) stem 4-leaved, very 
villous; leaves unequal, oval, petiolate, doubly crenated, clothed 
with silky villi on both surfaces; peduncles solitary, or twin, 
many-flowered, glabrous, longer than the leaves; calyxes 
smooth. 2t. G. Native of Nipaul. Leaves 1-2 inches long, 
rounded at the base: radical ones none. Segments of calyx 
very short, rounded. Corolla large, purple. 
Villous Didymocarpus. | Pl. 1 to 4 foot. 
5 D.ozróNcA (Wall. pl. rar. asiat. 2. p. 94. t. 140. D. 
Don, prod. fl. nep. p. 123.) 
stem furnished with 2-4 leaves 
at top, woolly, or downy ; leaves 
elliptic-oblong, or ovate-oblong, 
acuminated, rather villous ; pe- 
duncles terminal, erowded, twice 
forked, with 2 sessile, cordate 
sessile bracteas under each bi- 
furcation, downy. %. G. Na- 
tive of Nipaul, among rocks on 
Sheopore. Radical leaves none. 
Leaves 24 inches long, and be- 
low an inch broad. Middle 
pedicels 1-flowered, and lateral 
ones generally 2-flowered. Co- 
rolas dark purple. Bracteas or 
involucral leaves quite entire, 
and are, as well as the calyxes, 
coloured. (Fig. 73.) 
Oblong-leaved Didymocarpus. Pl. & to 1 foot. 
6 D. AnovA'ricA (Wall. in edinb. phil. journ. 1. p. 278. pl. 
rar. asiat. 2. p. 31. t. 141. D. Don, prod. fl. nep. 123.) stem 
leafy, pubescent; radical leaves few, pressed to the ground, 
ovate-cordate, obtuse, crenated, on short petioles, the two lower 
cauline ones broad-cordate, on long petioles, coarsely and 
FIG. 73. 
