OF ARTS AND SCIENCES. 331 



p. 18, t. 2, f. 1 (jV. Berkmdieri Gray, I.e.) : forma laxa ; floribiis ni;nc 

 brevissime nuuc longiuscule pcdunculalis ; sepalis corolla subdimidio 

 brevioribus ca[)sula stepius duplo longioribus. — To the true N. undu- 

 latnm belongs no. 131 of Bourgeau's Mexican collection: it has not 

 been met. with in the United States; but the variety, found at Mata- 

 moras and Keynnsa, probably occurs also on the other side of the Rio 

 Grande. 



N. STENOCARPDM. PrfGcedeuti simile; ovario angustiore ; cai>sula 

 fere lineari sepala subaequante ; semiuibus angulatis nunc fere cubicis, 

 testa crassiore opaca brunnea eximie alveolato-reticulat.t. — N. undu- 

 latum Gray, Proc. 1. c, quoad pi. Tex.-X. Mex., non HBK. N. un- 

 dulatum Chois. I.e. pro parte. — Texas to Arizona and contiguous 

 parts of Mexico. To this belongs Berlandier's no. 1095, 1435 and 

 175, 2111 and G94, 2195 and 775, 2328 and 898, and 2o2o. The seeds 

 are nearly a quarter of a line long, considerably larger than those of 

 N. undulatum, and very ditFerent in appearance ; they are usually 

 angled by mutual pressure, while those of the latter are regularly oval. 

 The styles'uot rarely coJiere to the middle or more, but are separable 

 without rupture. 



12. ERIODICTYON Benth. 



1. E. TOMENTOSU3I Benth. Bot. Sulph. p. 35. — The corollas when 

 well developed are nearly salverform, and twice the length of the calyx. 

 M. crasslfolium Benth. 1. c. was doubtless rightly united with this by 

 Dr. Torrey (in Bot. Mex. Bound, p. 48, &c.), and this name should 

 have been preferred ; but the other is good and of the same date. 



2. E. GLUTiNOSCM Benth. I.e. — Wigundia Californica Hook. & 

 Arn. Bot. Beech, p. 364, t. 88. — The filaments are often irregularly 

 and variably adnate to the corolla, sometimes for almost their whole 

 length. 



3. E. ANGUSTIFOLIUJI Nutt. PI. Gamb. p. 181. E. ghitinosum var. 

 angustifolium Torr. 1. c. — Arizona and S. Nevada to New Mexico. 

 Besides the very narrow and soon revolute leaves, this species has a 

 short-funuelform corolla, only 2 or 3 lines long, sometimes almost cam- 

 panulate. 



13. HYDROLEA Linn. 



1. H. CORYJIBOSA Ell. luermis, raro subspinosa, gracilis ; foliis 

 lanceolatis brevibus glabris ; floribus in cyma terminali corymbiformi ; 

 sepalis lineari-lanceolatis villoso-hisjiidis corolla longioribus ; genitali- 

 bus longis filiformibus. — S. Carolina to Florida. 



