162 PROCEEDINGS OF THE ABIERICAN ACADEMY 



that of J^ucnide. The name choseu for the genus expresses its most 

 striking character, viz., the union of the petals.* 



LEMMONIA, Nov. Gen. Hydrojphyllacearum. 



Corolla brevi-campanulata, sepala angusto-linearia hand superans, 

 5-loba, intus nuda. Stamina brevia, tubo corollte brevissimo a^qualiter 

 inserta : filamenta siibulata. ad insertionem subito dilatata, quasi ap- 

 pendiculata : antherce cordato-didjmEe. Discus obscurus. Ovarium 

 ovoideum, pilosum, biloculare, stylis 2 brevibus superatum : stigmata 

 capitellata. Ovula in loculis binis, superposita, obovata, auatropa. 

 Capsula ovoidea, retusa, 4-sperma, bivalvis ; valvis membranaceis 

 semisepta angusta firmiora ferentihus. Semina ratione capsulae magna, 

 obovata, grosse rariter ruguloso-impressa ; testa tenui ca^terum licvi. 

 Embryo cylindricus, rectus, albumine carnoso paullo brevier. 



Lemmonia Californica. Herbula annua, depressa, dichotoma, 

 sericeo-canescens ; foliis alternis basi apiceque ramorum confertis spathu- 

 latis integerrimis ; floribus cymoso-congestis et in dichotomis infimis 

 solitariis subsessilibus ; sepalis albo-villosis angustissirais apice noa 

 latioribus, fructiferis (lineas 2 longis) capsulam superantibus ; corolla 

 lineam longa alba sen albida. — San Bernardino Co., California, on 

 Bear Valley Creek, on the head waters of the Mohave River, May, 

 1876, J. G. Lemmon. This interesting little plant, which was sent to 

 me in a letter by Mr. Lemmon at the time of its discovery, was passed 

 over by me as a Coldenia § Tiquiliopsis, which it resembles in aspect 

 and especially in mode of growth. But it proves to be the type of a 

 new geiuis, somewhat related to Draperia among the Pliacelieoe, yet 

 belonging jjroperly to the Namece. It is distinguished from Nama by the 

 short campanulate corolla and correspondingly short styles and subu- 

 late filaments (the latter dilated and thickened at the very insertion 

 in such manner as to form a sort of annulus to the corolla-tube), and 



* In the small but interesting collection of plants of Lower California, made 

 b}' the discoverer of this genus, occurs a new Hemizotiia, the characters of which 

 are here appended : — 



Hemizonia Streetsii. § Hartmannin, H. angnstifolkB et corijmhosce sat affinis, 

 humilis, ramosa e radice annua, pubescens, eglandulosa; foliis linearibus nunc 

 integerrimis nunc inciso-4-5-dentatis ; capitulis ramos terminantibus brevi- 

 pedunculatis ; ligulis ultra 12 biseriatis elongatis oblongo-spathulatis, tubo brevi 

 glanduloso ; paleis receptaculi convexo-conici circa flores disci plurimos steriles 

 basi connatis ; pappi paleis fl. disci 8-10 lineari-lanceolatis parum denticulatis 

 corolla paullo brevioribus ; acheniis radii Isevibus. — San Benito Island, Lower 

 California, Dr. Thomas H. Streets. 



