of the Galapagos Archipelago. 185 



et retusa, 3 lin. ad ^ unc. longa, ^ lin. lata, basi rotundata, supra medio sulcata, sicci- 

 tate flavo-fusca, marginibus recurvis, nervo latissimo incrassato, petiolo perbrevi crasso 

 continuo. Stipulae pro magnitudine foliorum majusculae. Involucra minima, incon- 

 spicua, sub ^ lin. longa, subsessilia, obovata, turbinata, segmentis transverse oblongis, 

 V. subrotundatis. Cocci non visi. 



I know of no species with which to compare this highly curious one. The 

 woody stem appears jointed, but does not break at the joints. The leaves are 

 all crowded, on very short axillary branchlets, which seldom exceed two lines 

 in length and are covered with stipules. 



76. Euphorbia, sp. ? 



Hab. Charles Island, Charles Darwin, Esq. 



Evidently belonging to this genus ; but the specimen in Mr. Darwin's her- 

 barium is too imperfect for examination. It is very different from any species 

 I am acquainted with. 



"JJ. Phyllanthus obovatus, Muhl. {Maschalanthus obovatus, Nutt. in Flora 



of Arkansa, Amer. Phil. Trans. 1834, p. 175.) 

 Hab. Charles Island, Charles Darwin, Esq. United States ; West Indies ; Brazil. 



78. AcALYPHA* PARVULA, Hooli.jil.; mouoica, pubescens, ramosa, ramis ascen- 

 dentibus, foliis longfe petiolatis cordatis vel suborbicularibus obtusis 

 crenato-serratis petiolis brevioribus, pedunculis androgynis gracillimis 

 elongatis, florum foemin. involucris solitariis v. 2-3 distantibus cuculla- 

 tis 8-fidis, floribus masculis numerosis in spicam terminalem densam 

 aggregatis. 



Hab. Albemarle Island, Mr. Macrae. 



* In this and the following species of Acalypha the inflorescence is monoecious and spicate ; the 

 male flowers are furnished each with a bractea at the base of the pedicel ; the female have no proper 

 perianth. In the first the spike is elongated, with a slender axillary rachis ; the female flowers, some- 

 times solitary, are placed at the lower part of the spike, each surrounded by a tri-multifid involucre ; 

 rarely more than one is found in each of the involucres. The male flowers occupy the upper part of the 

 spike, and are more or less densely crowded. A. strohilifera has the involucres containing the female 

 flowers so numerous, that the upper or male part of the spike is sometimes obliterated, and the inflo- 

 rescence resembles a strobilus. In A. reniformis the male and female flowers are placed together in 

 the involucres, which in the other species are proper to the female flowers only ; from whence it appears 

 that this integument should in no case be considered a calyx. 



