136 



2. T.T8T OF PLANTS FJIOIM CxATjArAGOS ISLANDS. 



liy J. N. Hose. 



These islands are ten in number, situated on the eciuator, and are 300 

 to (UK) miles from tlie maiiiLind of South America. 



Two lar^^e collections have been made from these islands; First, that 

 of Charles Darwin in 18;};"), who obtained about 200 species; and second, 

 that of N. J. An(l(>rsson in 1851 , 



David ])ou,u]ass, witii Dr. Scolder, also spent several days on these 

 islands in 18-55. Of the 150 spe<'ies obtained by Douglass only 50 were 

 saved, and these in very poor condition. Hugh Oumniings made a small 

 collection in 1820. Mr. Macrae also made a large collection, and Mr. 

 Edmonsbtne, in 1845, collected largely here. Admiral Du Petit- 

 Thouars obtained a few species. In 1845 Sir Joseph Hooker pub- 

 lished the first enunu'ration of the plants of these islands. He reports 

 upon 205 s])ccies, of which 253 are idianerogams and ferns, and of this 

 number 123 a,re described as new. In 1861 N. J. Andersson pulilished 

 the second enumeration, l)eing a report upon his collection (made in 

 1852) and inchiding all the previous collections. He enumerates 302 

 species, of whi(;h 372 are phanerogams and ferns, and of these 72 are 

 described as new. 



MALVACEAE. 



GoBsypium purpurascens Toir. (?) Diiiicnii Islund, April 2. Tin's is ])rob- 

 al>I.Y i\n' Kiiiuo phiiit that both Ifookcr and Anders.soii r^'lbrrcd to tlir abdve 

 epocies. It is certainly near G. liarhadnise L., but thn icavt-s are moni slroii-Iy 

 black-dotted than in any of the species in the National Herbariuiu. The lIcTw- 

 ers appear to be yellow. 



ZYGOPHYLLACEJE. 



Tribiilus maximus L. Duncan Island. April 2. 



1 am not able to sc])arato this from tii.^ many forms of this specii-s. I suppose 

 it is the same as the variety adscendens of Andersson, wlio obtained it from 

 both Charles and Cliathani islands. 



Tribulus servicens An<ls., var. HUMiFrTsrs Ands. Leailets 7 pairs: petals 5 lines 

 loni;-: carpels 5^ one abortive.— Charles Island. April 1. 



Also obtained here by Andersson, Only two small specimens wen^ obtained 

 bnt the8<! have both ilower and fruit. The orij^inal des<-ripf.ion contains nc. ref- 

 erence to the flowers and their size is given above. The itowers are considerably 

 larger than T. terreslris, to which it is nearly related. 



GERANIACEiE. 



Oxalis (HedysarioidecB) Agassizi Rose, n. sp. Annual, erect, simple or branched 

 glabra.te; the younj^^er parts hairy, (t to 12 inches hi^vh : heaves on petioles 1 to H 

 inches long; leaflets 3, the o<hl one distinct, the lateral on short ix^Jiolules 

 broadly obovate, 6 to 9 lines long, 5 to 8 lines broad; surface finely re(,ienlated' 

 resoml>]ing a minnto honeycomb: peduncle about the length or longer than the 

 leaves: llowers few, yellow: ovary oblong, obtuse, 3 lines long.— Duncan Island. 

 April 2. 



Three other species have been found on these islands, viz : 0. carnosa Molina, O. 

 Cornelli Ands. and 0. Barreliari Jacq., with none of which it agrees. It belong* 

 to the same section as the last species, but differs in its annual habit, color of 

 flowers, etc. 



