20. R. MACROPHYLLUS. 153 



but exceedingly long-based prickles on both shoots. It pro- 

 bably is a state of this variety. It is in the Herb. Borrer. 



B amplificatus (Lees) ; aculeis e basi maxima brevi- 

 bus, foliis saepissime quinatis, foliolis subduplicato- 

 patenti-dentatis suhtus in venis tantum pilosis nee 

 tomentosis, foliolo terminali late obovato acuminate, 

 panicula3 maximse aculeis e basi maxima compressa 

 validis, sepalorum apice ssepe foliaceo-dilatato, corolla 

 alba vel subrosea. 



B. ampUJicatus Lees! in Steele 5S (1847); Mai v. 5Q. 

 Blox. ! in Kirby 45. 



R. macrojyhyllus y amplificatus Bab.! Syn. 20; Man. ed. 

 2. 101; ed. G. 111. 



R. umhraticus P. J. Miill. 1 in Wirtg. Herb. Bub. No. 

 82 (sp.). 



R. stereacanthus P. J. Miill. (teste Genevier). 



Very nearly allied to R. Schlechtendalii. Leaflets hairy 

 only on the veins beneath, rather irregularly dentate with 

 the larger teeth somewhat reflexed; terminal roundly obo- 

 vate, acuminate, sometimes subcordate at the base; petioles 

 and midribs with strong but slender hooked prickles be- 

 neath. 



Flowering shoot with very strong (especially in the 

 panicle) deflexed or declining prickles springing from ex- 

 ceedingly long compressed bases. Panicle leafy, long ; 

 branches mostly axillary, lower forming secondary panicles, 

 upper short racemose-corymbose exceeded by the leaves. 

 Sepals with a slender leaflike point. Petals rather distant, 

 obovate, toothed, mostly white but sometimes tinged with 

 purple. Filaments white. Anthers and styles greenish. 



