OF ARTS AND SCIENCES. 57 



of their having been described from time to time in a piece-meal way, 

 and by several different hands. 



foliis fere omnibus alternis parvulis. — Myosotis Califomica Fisch. & Meyer. — 

 California and Oregon to New Mexico and Saskatchawan. 



[K. KixGii Watson (vide p. GOj may be found to belong to this section, when 

 mature fruit is'known.] 



§2. Plagiobothrys. {Pluciiohothrijs Yisuh. & Meyer, A. DC.) Nuculie gyno- 

 basi hemispliericae medio affixae, ovato-trigonse, subito acutae, pi. m. incurvaj, 

 transversim rugosEe, ventre medio concavo ad insertionem strophiolato, stro- 

 phiola persistente : ovulum amphitropum. Ilerbce annuse, parvulae, villoso- 

 hirsuta), tloribus Eueritrichii. 



Four North American species can be made out, one of which is also Chilian, 

 and there is a fifth, E. tinctorium A. DC, in Chili; the latter with commonly 

 bracteate and scattered flowers, and nutlets only half as large as in E. fulvum. 

 The granulation or murication of tlie surface of the nutlets is too variable and 

 inconstant for specific characters. 



* Nuculaj plus minus opacae, lineis angustis irregularibus elevatis rugosse. 



E. FTLVDM A. DC. Spithamaeum ad pedale ; pube fiilva in calycibus 

 rufa ; spicis demura laxis ; nuculis opacis lineis elevatis grosse rugosis, carina 

 dorsali vix conspicua. — Myosotis fnlva Hook. & Am. Bot. Beech, p. 38 & 369. 

 Plaijiobothri/s riifescens Fisch. & Meyer, Ind. Seni. Petrop. 1835, p. 46 ; A. DC. 

 Prodr. 10, p. 134. Bothriospermi sp. Benth. PI. Hartw. no. 1873. — Chili, Cali- 

 fornia and Oregon. 



E. CANKSCENS. Pubc ctiam calycis albida ; spicis demum elongatis ; nuculis 

 subopacis lineis elevatis longioribus dorso transversim rugosis. — Mi/osotis ajmosa 

 Nutt., an impublished name mentioned in Hook. Kew Jour. Bot. 3, p. 294. 

 Plagiohothrijs canescens Benth. PI. Hartw. no. 1871, p. 326. — California, Doug- 

 las, Coulter, Fremont, Hartweg; Oregon, Tolmie, Nuttall, E. Hall. Apparently 

 found only toward.s the coast. The nutlets incline to dehisce down the ventral 

 ridge to the insertion. This species is in Coulter's Collection, no. 511. It is 

 also in that of Douglas, a stout and very leafy form. It is therefore likely to 

 be eitlier the plant referred in Bot. Beechey, p. 369, to Myosotis Jiaccida, or else 

 the M. muricata Hook. & Arn. 



* * Nuculae (lato-ovataa) vitreo-nitidae, lineis angustlssimis fere rectis inter 

 rugas transversales applanatas exsculptae : eoroUae parvae. 



E. TENELLUM. MoUitcr hirsutum, pube superne pr<e<ertira calycis fulva ; 

 caulibus e rosula foliorum radicalium erectis saepius exiguis ; foliis lato-linearibus 

 seu oblongo-lanceolatis ; spicis brevibus vel interruptis basi tantum foiiatis ; 

 nuculis maturis nitentibus albis basi et apice subito contractis quasi cruciatis, 

 facie concava, rugis dorsalibus muricatis. — Myosotis (Dasijinorphu) tenella Nutt. 

 in Hook. Kew. Jour. Bot. 1. c. p. 29.5. Eritrkhium fulvum Wats. Bot. King, 

 p. 243, & Gray, Proc. Am. Acad. 8, p. 397, non A. DC. — British Columbia to 

 the northern and eastern parts of California, and through Idalio and Nevada. 

 The mature nutlets have the aspect of vitreous enamel ; the close transverse 



