NOTES RESPECTING THE ROSES OF PLYMOUTH. 347 



Pectocarya linearis, jD C. E. Abertianum, Torr. Pilostyles Thurberi, (?. 



Amsincliia spectabilis, Chorizanthe brevicornu, Ephedra antisypliilitica, 



Fisch. et Mey. Torr. Berland. 



Nama jamaicensis, L. Acanthogonum rigidum, Juniperus tet ragona, Schl. 



Phacelia micrantha, Torr. Torr. J. occidentalis, Hook. 



Gilia aurea, 'Nutt. Centrostegia Thurberi, G. Agave americana, L. 



Navarretia Schottii, Tor. AchyronychiaCooperi, G. A. lecheguilla, Torr. 



Ipomoea leptophylla, T. Acanthochiton Wrightii, A. geminiflora, Gawl. 



Evolvulus argenteus, P^A. Torr. A. parviflora, Torr. 



Nicotiana quadrivalvis, Sarratia Berlandiei'i, JJ/oj. Dasylirion graminifo- 



Pursh. GuiJlemina densa, Moq. Hum, Zucc. 



Pliysalis cardiophylla, Alteranthera lanuginosa, D. Bigelovii, Torr. 



Torr. et Gray. Torr. Hesperocallis undulata, G. 



Lycium pallidum, Miers. Obione canescens, Moq. Yucca angustifolia, Psh. 



Amsonia tomentosa, T. O. hymenelytra, Torr. Y. stenophylla, Eng. ined. 



Aselepias subulata, Due. O. occidentalis, Moq. Y. brevifolia, Eng. ined. 



Selinocarpus angustifo- Corisperraum hyssopifo- Y. baccata, Torr. 



lius, Torr. et Gray. lium, L. Aristida purpurascens, 



S. diffusus, Gray. Sarcobatis vermicularis, Poir. 



Boerliaavia erecta, L. Nees. Pappophorum boreale, 



B. erioselina, Gray. Phoradendron californi- Led. 



Abrouia mellifera, Doiigl. cum, Nutt. Bouteloua oligostachya, 



A. cycloptera, Gray. Euphorbia albo-margi- Nutt. 



A. fragrans, Nutt. nata, Torr. B. eriopoda, Torr. 



Eriogonum fasciculatuin, Croton procumbens, B. polystachya, Benth. 



Benth. Esch. Chloris alba, Pre»Z. 



E. gracile, Benth. Aphora serrata, Engel. Tricuspis pulchella, Kth. 



E. vimineum, Doiigl. Mozinna cardiophylla, Brizopyrum spicatum, 



E. cordatum, Torr. Engel. Hook. 



NOTES TtESPECTING SOME OF THE ROSES OF THE 

 NEIGHBOURHOOD OF PLYMOUTH, WITH THEIR 

 DISTRIBUTION WITHIN TWELVE MILES OF THAT 

 TOWN. 



By T. R. Archer Bkiggs. 



The following paper is an attempt towards identifying the Roses of 

 the neighbourhood of Plymoulh, with plants described by Mr. J. G. 

 Baker in his two valnablc papers, " Review of the British Roses," and 

 " A Monograph of the l?ritish Roses." To the same distinguished 

 student of this difficult genus, I must express my obligations for kind 

 assistance rendered in correspondence at various times. 



1. Rosa spinosimma, Linn. Our only example of its group, and 



