42 THE VOYAGE OE H.M.S. CHALLENGER. 



Erigeron canadensis, Linn. 



Erigeron canadensis, Linn., Sp. PL, ed. 1, p. 863 j Griseb., Fl. Brit. W. Ind., p. 365 ; Chapm., Fl. 

 Southern U.S., p. 206. 

 Bermudas. — Introduced. A common weed — Moseley ; Reade. 

 Canada to Brazil, and naturalised in many other countries of both hemispheres. 



Erigeron darrellianus, Hemsl. (Plate I.) 

 Erigeron darrellianus, Hemsl. 



Perennis, habitu foliisque Conyzce rivularis, a qua differt eapitulis, radiatis, minoribus, 

 nunierosioribus, &c. 



Ilerba perennis, ut videtur, 1-2 ped. alta, basi lignosa, caulibus basi simplicibus, 

 floriferis inferne exfoliatis, superne graciliter corymboso-paniculatis. Folia sessilia, 

 confertissima, membrauacea, oblongo-lanceolata vel oblanceolata, usque ad 3 poll, longa, 

 apiculata, integra vel utrinque pauci apiculato-dentata, undique sparse pilosula, superiora 

 gradatim minora, discreta, Capitula numerosissima, 3-4 lineas diametro ; involucri 

 bracteoe circiter 3-seriatse, intequales, lineares, margine scariosse ; ligulse 30-35, 2-seriatEe (?) 

 angustissimse, bracteas 1-2 lineas superantes. Achenia (matura desuut) sparse pilosula ; 

 pappi setae pauci-seriatas, hispidula3. — Journ. Bot., 1883, p. 104, t. 239, fig. 1. 



Endemic. 



Bocky places on the coast — Lefroy ; Moseley. 



This is compared in the foregoing description with Conyza rivularis, a Brazilian plant, 

 which it closely resembles in habit, though the presence of a ray indicates the neighbouring 

 genus Erigeron, as it is generally understood. Possibly it may prove to be a maritime 

 form of some previously described species. 



It has been dedicated to the Hon. J. H. Darrell, whose services to botany are mentioned 

 in the introduction to this synopsis of the flora of the Bermudas. 



In the Sloane Collection of the British Museum (xcvi. p. 29) there is a specimen 

 collected by J. Dickinson, who found it growing among bushes and flowers. Dickinson 

 calls this "Hog-weed," a name now applied, according to Lefroy, to Boerhaavia 

 erecta. 



Erigeron linifolius, Willd. 



Erigeron linifolius, Willd., Sp. PL, iii. p. 1955; Baker in Mart. Fl. Bras., fasc. lxxxvii. p. 31. 

 Conyza ambigua, DC, Prodr., v. p. 3S1. 



Bermudas. — Introduced. A common weed — Lefroy ; Lane; Moseley. And in the 

 British Museum, Sloane's Herbarium, xxxii. p. 83 — Dickinson. 



A native of Europe, now naturalised in many countries. 



