FLORA OF THE GALAPAGOS ISLANDS. 161 



Chatham Isl. : Andersson ; southwest end, lower region, Baur, no. 9 

 (hb. Gr.) ; northern part, Baur, no. 7 (hb. Gr.) ; Snodgrass «& Heller^ 

 no. 494 (lib. Gr.). Indekatigable Jsl. : Conway Bay, Baur, no. 4 

 (hb. Gr.) ; northern part, Snodgrass & Heller, no. 6G8 (hb. Gr.). Jervis 

 Isl.: Baur, no. 6 (hb. Gr.). Endemic. 



Var. insularis. P. obovata, Hook. f. (3), 233; Anderss. (1), 231, & 

 (2), 99, t. 10, f. 2 ; Rob. & Greenm. (1), 146 ; not St. Hil. P. insularis, 

 Bennett, Jour. Bot. xvii. 204 (1879) ; Rob. & Greenm. (1), 14G, in 

 part. — Foliis latioribus, obovato-oblanceolatis vel obovatis, crassioribus ; 

 floribus minoribus, racemis brevibus. — Galapagos Ids. : Cuming, 

 no. 103, ace. to Bennett, 1. c. ; Mr. Brace (hb. Gr.). Albemarle Isl. : 

 Macrae, ace. to Bennett, 1. c. Charles Isl. : Edmonston ; Andersson ; 

 Baur. Chatham Isl.: Darwin; Andersson (hb. Gr.). Jervis Isl.: 

 Baur, no. 8 (hb. Gr.). Endemic. None of the distinctions between 

 this and P. galapageia, given by Bennett, hold in the series of speci- 

 mens now at hand. Andersson names two foliar forms (latifolia and 

 angustifoUa). 



EUPHORBIACEAE. 



Acalypha, L.^ 



A. Adamsii, nov. sp. ; perennis ; caule tenui plus minusve repente 

 copiose ramoso fusco griseo-tomentuloso ; iiidumento e pilis brevibus 

 albidis recurvatis sed in apice caulis plus minusve longioribus et flaves- 

 centibus composito; foliis late ovatis vel suborbicularibus crenatis 



1 With the material now at hand it is impossible to accept the treatment of 

 Acaly/iha given by Mueller Argovensis, who reduces all Galapageian forms to 

 varieties of one polymorphous species. We have here to do not only with annuals 

 and perennials, with erect and prostrate habit, and with leaves of very different 

 size, covered with pubescence varying from velvety and non-glandular to hirsute 

 or glandular, but accompnnying these considerable differences are others in the 

 inflorescence sufficiently striking and constant to be classed as specific distinctions. 

 The following key will suggest the leading diagnostic features. 



Synopsis of the Galapageian Acalyphas. 



* Involucre of the 9 flowers 3-parted. 



1. A. flACciDA, Hook. f. 



* * Involucre irregularly 9-toothed : leaves large, 4 to 6 cm. long: floriferous part 

 of the (J inflorescence 5 cm. in length, the peduncles very short. 



2. A. Baurii, TJob. & Greenm. 



* * * Involucre irregularly 7-9-toothed : leaves rarely over 3 cm. in length : 

 floriferous part of cj inflorescence 1 mm. to 2 cm. long, commonly equalled 



VOL. XXXVIII. — 11 



