Laphionaeme. |} LXXXV, ASCLEPIADE# (BROWN). 269 
at their base, conniving in a cone, and connate at their tips. 
Pollen granular. Style not exceeding the anthers, conical at the 
apex. Follicles often solitary by abortion, short or long, lanceolate, 
fusiform, or Jinear-terete. Seeds crowned with a tuft of hairs.—Herbs 
with tuberous rootstock, often furnished with an elongated woody neck ; 
Juice milky. Stem herbaceous, usually dwarf, simple or branched, 
rarely twining. Leaves opposite. Flowers small or of moderate size, 
in few- or many-flowered cymes or clusters, terminal, or in the forks 
of the stem, or subaxillary from one axil, rarely from both.—4 poxyan- 
thera, Hochst. in Flora, 1843, 78. Zucchellia, Decne. in DC. Prod. viii. 
492. Zaczatea, Baill. in Bull. Soc. Linn. Paris, ii. (1889) 806 (86 by 
error) ; and Hist. Pl. x. 295. Rhaphiacme, K. Schum. in Engl. Jahrb. 
a Raphiacme, K. Schum in Engl. & Prantl, Pflanzenfam. iv. 
i. 220, 
Species 18-20, natives of Tropical and South Africa. 
In the structure of its flowers this genus is nearly related to Tacazzea, from 
which most of the species may be distinguished by the presence of a distinct (bat 
Sometimes short) campanulate tube to the corolla, or failing that, by the intlor- 
€seence being terminal or from one axil only of each pair of leaves, and by the much 
dwarfer more herbaceous habit. The ridges on the base of the corolla-lobes pro- 
bably represent another coronal whorl in a rudimentary state; in some cases they 
appear to be directly continuous with the base of the staminal-filaments. When the 
Coronal-lobes are trifid, the lateral teeth are sometimes clearly seen to originate out- 
Side of the longer middle tooth and perhaps represent an exterior whorl of processes 
although usually more or less combined with the more developed middle tooth. 
Corolla-lobes 7-10 lin. long ; inflorescence terminal. 
Coronal-lobes rectangular, trifid, with the middle 
tooth longest, subulate or filiform . B . L. R. grandiflora. 
Coronal-lobes ovate at the base, tapering to a long 
acuminate point . : A 5 « 2. B. linearis. 
Coronal-lobes filiform , : : c a . 3&8. BR. splendens. 
Corolla-lobes 2-4 lin. long. 
Flowers in a terminal globose head; leaves narrow . 4. R. globosa, 
Flowers in a terminal corymbose cyme ; leaves broad 5. &. angolensis. 
Cymes axillary and terminal, longer than the sub- 
tending leaves or bracts, arranged along the 
terminal part of the stem and its branches, 
forming a rather large paniculate or corymbose 
inflorescence, coronal-lobes simple, filiform. 
Stamens 24 lin. long, % as long as the coronal- : : 
lobes ; corolla-lobes 34—4lin. long . . 6. BR. jurensis. 
Stamens 1-1} lin. long, not half as long as the 
coronal-lobes. 
Corolla-lobes 3 lin. long : : ° 
Corolla-lobes 2-23 lin. long. ° . 
Cymes axillary, shorter than the subtending leaves. 
Flowers in dens bglobose many-flowered clus- 
ters eee ee , : . 9. R. Welwitschii. 
Flowers in small shortly branched cymes. 
Coronal-lobes linear-lanceolate, bifid at the 
apex z i fs : : . 10. BR. lanceolata. 
. TW. R. excise. 
. 8. BR. Brownii. 
