Thunbergia. | ACANTHACER. 241 
Has.—Common in the tropical and mixed forests all over Burma and the 
adjacent islands down to Tenasserim and the Andamans.—FI. C.S. 
REMaRrxks.— Wood greyish brown, very porose, rather light, soft. 
3. T. smilacifolia, Kz.—An evergreen glabrous climber with 
suleate branches; leaves ovate-lanceolate, peltate at the trun- 
eate or slightly emarginate base, acuminate, 3-4 in. long, on a 
slender glabrous petiole 2-3 in. long, remotely and slightly callose- 
thed, membranous, opaque on both surfaces, palmately 5-nerved, 
with the veins between indistinct; flowers large, blue (?), on longer 
or shorter velvety-tomentose pedicels, forming 1-14 ft. long velvety- 
tomentose racemes ; bractlets falcate-lanceolate, acuminate, velvety- 
tomentose; corolla-lobes rotundate, entire; calyx-limb truncate, 
tomentose. 
Has.—Ava.—Fl. Feb. 
ACANTHUS, L. 
Calyx 4-parted, the upper entire segment somewhat larger, the 
lower 2-cleft. Corolla-limb expanded into a large, entire or 3-lobed 
lip, the upper lip wanting or scarcely prominent. Stamens 4, didy- 
namous; anthers 1-celled, adnate, bearded and fringed. Ovary 2- 
celled, the cells 2-ovuled. Capsule compressed, 4-seeded. Seeds 
large, flat, supported by thick seed-bearers.— Erect or twining shrubs 
or herbs, the leaves often spiny. Flowers usually conspicuous, in 
tacted terminal spikes. 
* Shorter filaments at the apex hook-like inflexed, Bracts, 
etc., spiny-toot. Herbs. 
Corolla 13 in, long, almost glabrous; bracts pubescent, rotundate, a 
ristly mucronate ; leaves long-petioled . ‘ . A. longipetiolatus. 
Filaments all straight. Bracts entire. 
__ Erect shrubs. 
Leaves sessile or very shortly petioled, prickly-lobed; flowers 14-2 ates 
_in- lo . - , : "i - ° . . A, ilicifolius. 
Petioles } an in. long, rarely very short; leaves entire or toothed ; 
Owers an inch long oralittlelonger . . + «- + A. ebracteatus. 
. ini leaves obovate, entire i . A, volubilis. 
LA K 
Tous, 2-4 ft. high; leaves elliptical to elongate-oblong, very short- 
ly petioled or almost sessile, 4-8 in. long, acute or 
harshly coriaceous and glossy, glabrous, shortly lobed or toothed and 
all the teeth or lobes terminating into sharp prickles; stipules 
‘Aorter, coriaceous, glabrous, striate ; bractlets conform, but smaller, 
often mucronate ; ealyx-segments oblong, coriaceous, the 2 outer 
ones 6-8 lin. long, the 2 inner ones smaller, similar to the bracts ; 
VOL. 11, Q 
