Plates 2531 and 2532. 



EUPHORBIA GRANDICORNIS, Goebel. 



Eupiioi:hi \ck.i 



E. 



PA 



pp. 42, 59 et 63, ff. 26, 29, et 30 ; inter species aftines spinis longis 

 validis insignis. 



Frutex succulentus (exemplum in horto Kewensi cultum 6-pedale), 

 e basi ramosus, spinosus, aphyllus. Rami 3-6 poll, diam., constricto- 

 articulati, alte 3-4 costati, glabri, virides, nee glauci. Articuli 2-5 

 poll, longi, in ambitu reniformes vel subsagittato-ovati. Costa? alne- 

 formes 1^-3 poll, latse valde compressie, marginibus induratis albo- 

 cinereis instructs. Nodi biformes, steriles et florigeri alternantes ; 

 steriles spinis binis i-lf poll, longis, validis, divergentibus, basi 

 unispinulosis, albo-cinereis armati ; florigeri spinis minutis \-\ lin. 

 longis instruct!. Involucri saepe terni, unisexuales, (masculini tantum 

 visi,) campanulati, brevissime pedunculati, 5-glandulosi, fauce 5-squa- 

 mata, basiextus bibracteati ; bractea unaqurequeinvolucrum fcemineum 

 rudiraentare integens. Glandnlce 1 lin. longa?, 1^ lin. lata*, transverse 

 oblongse, integrae, rotundata?, lutescentes. Squamm faucis glandulis 

 alternantes, § lin. longse et latse, subquadratre, apice breviter fimbriate. 

 Mores omnes masculini, bracteolis membranaceis lacerato-fimbriatis 

 intermixti. — Neubert, Deutsches GarL Mag. xlvi. p. 291 cum ic. 



South Africa : Umfolosi River, Zululand, Stone. 



Described and figured from a plant cultivated at Kew. This remark- 

 able and very distinct species seems more nearly related to E. Iemaireaix> t 

 Boiss. than to any other described species, but is readily distinguished 

 from all by its very long, stout spines. The involucres appear to be 

 entirely unisexual, all that I have examined being male, without a 

 trace of a female flower within them. At their base, however, com- 

 pletely concealed under the bracts are two very rudimentary lateral 

 involucres, in each of which a very young female flower was found, 

 which possibly under natural conditions may develop and fructify, but 

 in the Kew plant has not done so ; the whole inflorescence falling off 

 after the pollen is shed. — N. E. Browx. 



Plate 2532 : Fig. 1, inflorescence ; 2, longitudinal section of an inflorescence ; 3. part 

 of an involucre showing the glands and the scales at the throat ; 4, a scale from the 

 throat of the involucre ; 5, braeteoles ; 6, male flowers. All enlarged. 



