56 PROCEEDINGS OF THE AMERICAN ACADEMY 



species on the whole, as now characterized, are fairly well marked. 

 The principal ditficulties encountered were the inevitable consequence 



amphitropum adscendens : pedicelli baud articulati : calyx 5-partitu9, persis- 

 tens : coroUse tubus brevis : flores nunc bracteati nunc ebracteati. 



* Ec/iinospermoidea, nuculis ala pectinata cinctis, arctico-alpina, perennia, floribus 



laete caeruleis. 



E. NANDM Schrad., var. aretioides Herder. E. aretioides DC. E. villo- 

 sum var. aretioides Gray in Proc. Acad. Pbilad. 1863, p. 73 ; Wats. Bot. King, 

 p. 241. Mipsotis nana Torr. Ann. Lye. N. Y. Arctic and Alaskan Islands ; 

 bigliest Rocky Mountains from Wyoming to Colorado and Eastern .Utab ; tlie 

 latter smaller in all its parts. In botb forms, the pectinate lobes of tbe wing- 

 like border of tbe nutlets bear a few rigid bristly points, wbicb only need to 

 turn backwards to be glochidiate. 



* * ]\f;/of;otidea, annua (pauca in Amer. Austr. perennia) ; foliis linearibus, 



inferioribus siepius oppositis ; corolla alba ; nuculis baud marginatis pi. m. 

 rugosis. (Species inter se ambiguse.) 



E. PLEBEiuM A. DC. Procumbens, sparsiflorum ; calyce pedicello dupio 

 longiore coroUae limbum parvulum a^quante ; nuculis glabris grosse rugoso- 

 reticulatis lineamMongis ovato-trigonis dorso versus apiccm angustatum carina- 

 tis. — Lilhospermum plebeium Cham. & Schlecht. Unalaska and other Alaskan 

 Islands, Chamisso, Harrington. Crests in throat of the small corolla incon- 

 spicuous and smooth. 



E. Chorisianum DC. DifEusum, mo.x procumbens ; foliis inferioribus op- 

 positis ; floribus laxe racemosis hinc inde folioso-bracteatis ; pediceilis saltem 

 inferioribus calyce 2-4-plo longioribus patentibus fulvo hirsutis; corollas lobis 

 tubo suo longioribus calycem multum superantibus, cristis faucialibus conspicuis 

 luteis pubescentibus ; nuculis minoribus minus rugosis papilioso-scabris dorso a 

 basi ad apicem subcarinatis ; cicatrice anguste oblonga. — Mipsotis Chorisiana 

 Cliani. & Schlecht. Eritriclnnm ronnatifo/iiim Kellogg in Proc. Calif Acad. 

 2, p. 103, fig. 51. Bothriospermi sp. Benth. PI. Hartw. no. 1874. — California, 

 along the coast. 



E. ScouLERi A. DC. Erectum, gracile, spitJiamaenra ad pedale ; spicis 

 nudis sfepe geminatis demum strictis confertifloris ; pediceilis brevissimis erec- 

 tis ; calyce fructit'ero subclauso ; corolla prascedentis vel minore ; nuculis minor- 

 ibus (.semilineam longis) rugosis glabratis late ovatis, cicatrice rotunda. — 

 Mijosotis Chorisiana Lebm. in Hook. Fl. Bor.-Am., non Cham. M. Scoulcri 

 I-Iook. & Arn. Bot. Beech, p. 370. Eritricliinm pleheium Torr. Bot. Wbipp. p. 08, 

 non D('. E. C/iorisianum (no. 408), pkheinm (406) & Californimm, pro parte, 

 Gray, PI. Hall, in Proc. Am. Acad. 8, p. 397.— Oregon and California, along 

 and near the coast. 



E. Californicum DC. Biunciale ad subpedale, diffusum ; floribus siib- 

 sessilibus demum sparsis plerisque folio subtensis ; corolla minima calyce 

 (fructifero subpatulo) vix longiore, cristis faucialibus inconspicuis fere glabris, 

 lobis tubo suo brevioribus ; nuculis ovato-oblongis transversira rugosis scabridis ; 



