46 



i 



Manihot. The carpels are polyspermous and the seeds covered 

 with fulvous hairs. Perhaps, then, this is a new species, and 

 more closely allied to H. rhomb ifolius, Cav, ; tut we possess a 

 plant in flower from Owhjhee, collected by Mr. Macrae in 

 Byron's Bay, which seems to be the same as ours : this certainly 

 belongs to the section Cremontia by the nature of its corolla, and 

 has toothed leaves, as in H, Boryanus : the flowers are, however, 

 red, not white, and the leaves are three-nerved^ as in the speci- 

 men from Oahu/' 



//. BoryaiuiSy DC, is a native of Reunion (Bourbon), and 

 differs from both the Sandwich Islands plants mentioned by 

 Hooker and Arnott in its involucral bracts, which are longer 

 than the calyx (DC. Prodr., vol. i, -p. 446). The Beeehey Voyage 

 plant, Avhich has white flowers, has since received the name 

 H. Waimeae var. Hooheri^ Hochr. (Ann, Conserv. & Jard, Bot. 

 Geneve, vol. iv, p. 132); and the red-flowered plant collected by 

 Macrae at Byron's Bay, Hawaii, is identical with ^H. koMo, 

 Hillebrand. 



Asa Gray pointed out in 1854 (Bot. TJ.S. Expl. Exped., vol. i, 

 p. 177) that the two Sandwich Islands plants referred to //. 

 Boryanus by Hooker and Arnott were distinct from that species, 

 but he failed to recognise that they also differed from each other, 

 and accordingly described them as a single new species, to which 

 he gave the name H. Arnottianus. The characters of the two 

 species are so intermingled in Gray's description that it agrees 

 with neither: the long staminal column, for example, being a 

 characteristic of //. Waimeae var. Hool-erij and the red flowers, 

 of //. holno. If the name H. Arnottiamis is not to be relegated 

 to synonymy, as being a source of confusion, it seems that it 

 should be applied to H. koldoy since this was the species of which 

 Gray had material before him when he first proposed the name. 

 In 1837 Gray sent a specimen of this species, collected on Oahii 

 by Dioll, to Sir William Hooker, under the name Hibiscus 

 Aniottii, Gray (he subsequently altered the name to Arnot- 

 tianus). 



Hillebrand, however, who was the first to distinguish the two 

 Sandwich Islands species, applied the name H, Arnottiamis to 

 the one collected during Beechey's Voyage, i.e.y to H. Waimeae, 

 var. Hoolveriy Hochr,, and described the red-flowered species as 

 //. Ivokio ("Fl. Hawaiian Isl., p. 48), 



A. A. Heller followed Hillebrand in calling the Beeehey 

 Vo^'age plant H. Arnottianus, but considered that there was a 

 second white-flowered species In the Sandwich Islands, which 

 differed In having suborbicular, crenate leaves. This he pro- 

 posed as a new species, H. Waimeae (Minnesota Bot. Studies, 

 vol. i, p. 851). 



Hochreutincr, on the other hand, applied the name H. Arnot- 

 tianu.^ to the plant collected by Diell, i.e., to H. kohio. He 

 considered that there was only one white-flowered species In the 

 Sandwich Islands, and called it H. Waimeae^ distinguishing a 

 var. Hookeri, with entire leaves, foimded on the Beeehey plant, 

 and a var. Helleri, with crenate leaves, based on Heller's own 

 specimen (Ann, Conserv. & Jard, Bot. Geneve, vol. Iv, p. 132)- 



