Jiaphionacme.] lxxxv. asclepiade.e (uiiowx). i>(;<j 



at their base, conniving in a cone, and connate at tlieir tips. 

 Pollen granular. Style " not exceeding the anthers, conical at the 

 apex. Follicles often solitary by abortion, short or long, lanceolate, 

 fusiform, or linear-terete. Seeds crowned with a tuft of hairs. — Herbs 

 with tuberous rootstock, often furnished with an elongated woody nec-k ; 

 juice milky. Stem herbaceous, usually dwarf, simple or branched, 

 rarely twining. Leaves opposite. Flowers small or of moderate size 

 in few- or many-fiovvered cymes or clusters, terminal, or in the forks 

 of the stem, or subaxillary from one axil, rarely from both. — Aj)oxyan- 

 thera, Hochst. in Flora, 184:5, 78. ZuccheUla, ]3ecne. in ])C. Prod. viii. 

 492. Zaczatea, Baill. in Bull. Soc. Linn. Paris, ii. (18sO) sOd (nG by 

 error) ; and Hist. PI. x. 295. Rhwphiacme, K. Schum. in Engl. Jahrb. 

 xvii. 117. liajjhiacme, K. Schum in Engl. & Prantl, PHanzenfam. iv. 

 ii. 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 (but 

 sometimes short) campanulate tube to the corolla, or failing tliat, by the iiitlor- 

 escence being terminal or from one axil only of Citch pair of leaves, ;ind by tlie 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 cuses they 

 appear to be directly continuous with the bise of the staminal-filaments. NN'hen the 

 coronal-lobes are tritid, the lateral teeth are sometimes clearly seen to originate out- 

 side of the longer middle tooth and perhaps represent an exterior whorl of jirocesses 

 although usually more or less combined with the more developed middle tooth. 



Corolla-lobes 7-10 lin. long ; infloi'escence terminal. 

 Coi-onal-lobes rectangular, tritid, with the middle 



tootli longest, subul ite or filiform . . .I.E. rjrandi flora. 



Coronal-lobes ovate at the ba>e, tapering to a long 



acuminate point . . . . . . 2. Ii. linearis. 



Coronal-lobes tiliform '6. R. splendens. 



Corolla-lobes 2-4 lin. long. 



Flowers in a terminal globose head; leaves narrow . 4. Ji. glolosa. 

 Flowers in a terminal corymbose cyme ; leaves broad 5. R. a/itjoie/isis. 

 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 2i lin. long, § as long as the coronal- 

 lobes; corolla-h)bes 3^-4lin, long . • 6. R. jurensi.s-. 

 Stamens 1-1 1 lin. long, not half as long as the 

 coronal- lobes. 

 Corolla-lobes Sk lin. long . . . . 7. R. excisa. 



Corolla-lobes 2-2h lin. long . . . . S. R. Rroicnii. 



Cymes axillary, shorter than the subtending leaves. 

 Flowers in dense subglobose many -flowered clus- 

 ters . . . . . . . 9. R. irehcitschii. 



Flowers in small shortly branched cymes. 



Coronal-lobes linear-lanceolate, bifid at the 



apex .....•• 10. R- lanceohita. 



