ACANTHACÉES. 193 
GENERA 
I. THUNBERGIEZÆ. 
1. Thunbergia L. — Flores subregulares; receptaculo convexo. 
Calyx annularis, brevis v. nunc brevissimus, truncalus v. 10- &- den- 
tatus. Corollæ tubus rectus v. ineurvus, superne ampliatus; limbi pa- 
tentis lobis 5, parum inæqualibus, tortis, sinistrorsum obtegentibus. 
Stamina 4, didynama; filamentis corollæ affixis, basi incrassatis 
discretis ; antheris apieulatis, glabris v. barbatis; loculis 2, intror- 
sum rimosis, æqualibus, basi sæpius aristatis v. calcaratis. Discus 
aunularis v. pulvinatus. Germen 2-loculare ; stylo apice inæqui-2-lobo. 
Ovula in loculis 2, collateralia hemitropa; micropyle extrorsum infera. 
Capsula abrupte rostrata, loculicida. Semina in loculis À, 2, ventre 
excavata v. plana, extus lævia v. verrucosa; hilo centrali; funiculo 
brevi crasso. Embryo semini conformis; radicula ineurva; cotyledo- 
nibus crassis, sæpe inflexis v. plicatis. — Herbæ suberectæ v. sæpius 
volubiles, nunc basi frutescentes; foliis oppositis, sæpe cordalis v. 
hastatis; floribus axillaribus solitartis v. terminali-racemosis ; brac- 
teolis 2, lateralibus foliaceis valvatis florem ineludentibus. (Asia el 
Africa trop., Madagascaria.) — Vid. p. 408. 
99 pseudocalyx Rozkr.t-— Calyx annularis brevis, stellato-pilo- 
sus. Corollæ tubus geniculatus infracto-incurvus; limbus tortus, 
demum 2-labiatus, 5-lobus, subvalvatus?. Stamina 4, leviter didy- 
nama; filamentis brevibus; antherarum elongatarum apiculatarum 
loculis 2. inferne liberis divergentibus. Staminodium breve corollæ 
adnatum. Germen stellato-pubens; stylo curvo, apice stigmatoso bre- 
4. In Abh. Nat. Ver. Brem., VI, 416, 2, Spec. 1. P. saccatus RoLKF. 
