. 502 
DIOSMA dioica. Mas. 
JDioicous Diosma. Barren-flowered plant. 
—— 
PENTANDRIA' MONOGYNIA. 
Nat. ord. RUuTACEE. Jussieu gen. 269. Div. III. Genera Rutaceis 
la. 
845 Diosme®. Brown gen. rem. in append. to Flind. voy. 2. 
DIOSMA. Supra vol. 5. fol. 968. 
Div. Agathosma. Corona è filamentis 5 alternis sterilibus cochleari- 
petaloideis. 
D. dioica (mas), foliis lanceolatis, glabris, superioribus verticillato-trinis; 
floribus axillaribus aggregato-trinis, pedunculis 2plo brevioribus folio. 
Frutex prolifero-ramosus, 2-3-pedalis; rami subvertillati, foliosi teretes 
villosi virgato-adscendentes, cortice rubro-fusco rimis striate. Fol. cori- 
aceo-firma, patentissima, angusta, laneeolata, 4 uncie longa latitudine 
lineari v. sesquilineari suprà obscura-virentia lavia, sublüs punetata pruinoso- 
pallentia, margine deflexa punctisque glandulosis denticulata, apice glandu- 
loso acutulo, costá suprà obsoletiusculá, infra immersá saturatiüsgue virente, 
inferiora subdecussato-opposita, superiora alia) subverticillato-trina: pe- 
tiolus brevis, appressus. Mas. Flores inodori, axillares, per trinos aggre- 
gati; fasciculi solitarii, numerosi, infrd summos ramos racemoso-digesti: 
pedunc. Jüliformes, uniflori, 2plo ferà breviores folio, glanduloso-paptllosi, 
racteis pluribus imbricatis minutis crassis ovatis glandulosis ad basin cincti. 
Cal. pedunculi continuus similitérque papillosus, crassiusculus campanulato- 
patens ter v, ultrà brevior corollá semibfidus segmentis angulari-ovatis. Cor. 
pet 5 alba, disco supernè erubescentia, fundo calycis inserta, patentia, 
oblonga, obtusa, apice inflexa: corona triplo fer? brevior corollá, connivens, 
ex lamellis (staminibus abortivis) 5 oblongis albis villosis tenuibus glandulá 
virescente capitato-apiculatis. Fil. setacea, exserta, erecto-patentia, equa- 
lia ante anthesin à medio duplicatim retrofracte, exindóque erecto-expli- 
canda: anth. parvule, oblonga, obverse subsagittate, ante anthesin. luteo 
Suscoque rufescentes. Pist. obsoletum. 
We do not trace our plant in any published species; nor 
find it in the Banksian or Lambertian Herbariums. It is 
said to be of very late introduction from the Cape of Good 
Hope. 'The flowers, in all the plants we examined, were 
provided with only a slight rudiment of a pistil in the midst 
of the natural quota of perfect stamens; whence we have 
assumed them to belong to individuals of the barren side of 
a dioicous species, and of which the fertile plant is still un- 
known to us, affording, as far as our acquaintance with the 
subject extends, an anomalous instance in the genus. 
