24 



FLORULA ADENESSIS. 



ambitu 1-2 ped. Rami teretes, crassi, aphylli, dichotorai. Folia et 

 flores in apice ramorum. Corolla purpurea, 1^—2 unc. long.; lim- 

 bus 1 unc. latus. 



Ordo XXI. ASOLEPIADACE^E. 



1. Steinheilia, Decaisne. 



1. S. radians {Dene, in Ann. Sc. Nat. ser. 2. ix. p. 339) Incana, villosa, 

 caule erecto ; foliis subreniformibus, acutis, serratis, pulcberrime varie- 

 gatis, petiolatis; pedunculis axillaribus, solitariis, multifloris ; flori- 

 bus umbellatis, pedicellis brevibus ; calycibus 5-partitis, segmentis 

 lanceolatis, incano-hirsutis ; corolla calyce duplo longiore, glabra, 

 limbo 5-fido, lobis erectis, lanceolatis, acutis, contortis, tubo 5 foveis 

 instructo ; folliculo ovoideo, villoso. — Asclepias radians, Forsk. Descr. 

 p. 49. 



Hab. Aden, rarissime, in arenosis (T. Anders.). 



Distr. In Arabia Felici ! 



Herba perennis, odore mellis. Folia lurido-viridia, subtus violacea, 

 1 unc. longa, 1| unc. lata; petiolus \ unc. longus. Pedunculus 

 tomentosus, 1-2 unc. longus. Corolla 5 lin. longa, violacea. Folli- 

 culus abortu solitarius, carnosus. 



2. GtLOSsonema, Decaisne. 



1 . G. Boveanum (Dene, in Ann. Sc. Nat. ser. 2. ix. p. 335). Incanum, 

 " foliis lanceolatis vel ovato-lanceolatis, sinuato-dentatis, crispis, 

 utrinque pubescenti-incanis ; coronse squamis apice emarginatis, medio 

 subulatis ; folliculis ovatis, attenuatis, spinis innocuis instructis." — 

 Gomphocarpus pauciflorus, Hochst. et Steud. in PI. Schimp. n. 920. 



Hab. Aden (Edaew.). 



Distr. In Arabia Felici ! 



Herba perennis, incana. Folia opposita, linearia, lanceolata. Pedun- 

 culi extra-axillares. Pedicelli basi bracteolis setaceis instructi. 



I have not seen Edgeworth's specimen from Aden, and have therefore 

 adopted Decaisne's description, from the ' Annales des Sciences Naturelles, ' 

 and De Candolle's ' Prodromus/ vol. viii. p. 554. 



Ordo XXII. CONVOLVULACE^E. 



1. Convolvulus, Linn. 



1. C. glomeratus( Chois., DC. Prod. ix. p. 401). Caulibus praemultis, 

 prostratis, teretibus, gracilibus, pilis adpresssis pubescentibus ; foliis 

 hastato-lanceolatis, acutis, mucronulatis, petiolatis ; glomerulis axil- 

 laribus ; ]>edunculis folio duplo longioribus ; bracteis foliaceis, lanceo- 

 latis, villosis,calycein paulo superantibus; sepalis ovato-lanceolatis, fus- 

 ro-villosis; corolla calyce longiore, glabra ; capsulis globosis ; semi- 



