of the Galapagos Archipelago. 181 



Caulis spithamaeus, crassitie pennae olorinae. Rami oppositi, strict! v. curvati, pateates, 

 divaricati, prostrati, praecipue apices versus ascendentes, puberuli. Folia parva, sub ^ 

 unc. longa, patentia vel reflexa, obtusa v. retusa, basi rotundata, sub lente punctata ; 

 petiolo brevi, tenui. Amenta stricta, erecta, ad apices ramorum terminalia, 3-6 fasci- 

 culata, paucaque axillaria, una cum pedunculo ^ unc. longa et ultra, foveis nudisj 

 nucibus parvis, late ovatis, subacutis, basibus immersis. 



Allied to P. microphylla, H. B. K., but differing by the apparently horizontal 

 narrower nearly smooth leaves, not furnished with large glandular impressions, 

 and numerous amenta. 



62. P. PETioLATA, Hook. Jil. ; glaberrima, caule prostrato tetragono ?, foliis 



parvis oppositis lough petiolatis lat^ elliptico-ovatis vel rotundatis utrin- 

 que obtusis planis carnosis obscurfe 5-nerviis, amentis 2-4 terminalibus 

 elongatis. 

 Hab. James Island, Charles Darwin, Esq. 



Habitu priori subsimilis, sed glaberrima. Folia punctulata, sub | unc, longa, remota, pe- 

 tiolis aequilongis. Amenta sub 4, erecta ; unico 4 unc. longo, caeteris subuncialibus, 

 omnibus pedunculatis. 



63. P. FLAGELLiFORMis, Hook.Jil. ; glaberrima, caule elongate decumbente te- 

 tragono, ramis erectis, foliis quaternis breviter petiolatis obovato-oblongis 

 subretusis nervo medio et intramarginali percursis, amentis 4-7 termi- 

 nalibus filiformibus pedunculatis interdum di- trichotomis ad axillas 

 bracteolatis. 



P.Jlagelliformis, Miquel in Hook, Lond. Journ. of Bot, 

 Hab. James Island, Charles Darwin, Esq. 



Caules 1^-2 ped. longi, graciles, intemodiis bi-uncialibus. Folia erecto-patentia, punctata, 

 camosa, | unc. longa, ^ lata, ad apicem subretusum subtilissime ciliata ; petioli 1 lin. 

 longi. Amenta 2-3-uncialia, gracilia, erecta. 



Very near the P. portulacoefolia, H. B. K. ; the spadices are however nume- 

 rous, much longer, and sometimes branched. 



Urtice^. 



64. Urtica (Vrena) divaricata, Spr. 



Hab. Charles Island, Charles Darwin, Esq. Common in North America, and probably in 



South America also. 



2 B 2 



