﻿PLANTjE FENDLERIAN.E. 79 



372. Ambrosia coronopifolia, Torr. #• Gray, Fl. 2. p. 291. Santa Fe to Coun- 

 cil Grove ; Aug., Sept. (402.) 



' f373. A. longistylis, Nutt. ? Low places, Santa Fe Creek; July, Aug. (405.) 

 "Branches mostly decumbent, more than three feet long." Leaves all bipinnatifid. 

 Plant just coming into flower ; the fertile flowers not yet apparent. Perhaps a Fran- 

 seria. 



' |374. A. longistylis, Nutt. ? var. With the last ; a stouter and more hispid form; 

 the fertile flowers undeveloped. (407.) — Except that the leaves are more compound, 

 it is not unlike the Mexican plant referred by De Candolle to A. Peruviana, Willi. 

 ' 1 375. A. aptera, DC. Prodr. 5. p. 527. Bottom land, Council Grove to Walnut 

 Creek. (414.) — The upper petioles are slightly margined ; but the fruit is 4 - 6-tuber- 

 culate rather than spinose. 



375, bis. Franseria Hookeriana, Nutt. ; Torr. fy Gray, Fl. 2. p. 292. (Ambrosia 

 acanthicarpa, Hook.) Santa Fe, near the creek ; Oct. (409.) — The fertile involucre 

 is one-celled.* 



* The spines, which are flattened and somewhat scale-like in this and some other species of Franseria, are 

 represented by broad scarious wings in the following singular genus : — 



HYMENOCLEA, Torr. $ Gray, Fl. ined., fy in Emor. Report, p. 143 (absq. char.). 



Capitula monoica homogama, secus rachin persistentem glomerato-spicata. Mas. Involucrum Franseria?, 

 5-6-lobum, 15-20-florum. Receptaculum parvum, paleis scariosis unguiculatis obovato-dilatatis onustum. 

 Corolla cyathiformis 5-dentata. Antherce conniventes vix connatas, appendicula deltoidea inflexa superata?. 

 Ovarium vix ullum : stylus apice radiato-penicillatus. Fam. Involucrum fructiferum obovoideum seu fusi- 

 formi-clavatum, coriaceum, clausum, uniloculare, uniflorum, apice in rostrum tubuliforme superne scariosum 

 pervium desinens, extus squamis 9-12 magnis rotundatis scariosis persistentibus, aut spiraliter imbricatis aut 

 univerticillatis, insigniter alatum ! Corolla subnulla. Stamina nulla. Achenium ovoideum loculum implens. 

 Semen et embryo ordinis. — Frutices Neo-Mexicani et Californici, in aridis salinis vigentes, ramosissimi, gla- 

 brati, foliosi ; ramis subspinescentibus ; foliis alternis, filiformibus, subtus tenuiter incanis, inferioribus pinnato- 

 3 - 5-partitis, summis integerrimis. 



</ 1. H. Salsola (Torr. <$• Gray, I. c.) : involucro fructifero strobiliformi angulato squamas a basi ad api- 

 cem spiraliter dispositas rotundato-reniformes basi tuberculiformi-incrassatas undique gerente. — Sandy, saline 

 uplands near the Mohave River, in the interior desert of California, Fremont. — Heads spicate on short, rigid, 

 and persistent spurs of an inch or two in length. Fructiferous involucres crowded, nearly half an inch long, 

 covered with the broad and wing-like silvery scales, each about 4 lines wide, which are imbricated, as in a 

 bud, and conceal the nut-like involucre from which they arise, presenting the appearance of a scaly strobile, 

 or when moist widely spreading. This singular plant has the aspect of a Chenopodiacea rather than of a 

 Composita, although it presents wholly the structure of Ambrosia or Franseria. 

 ' 2. H. monogyra (Torr. fy Gray, I. c.) : involucro turbinato-fusiformi exangulato inferne nudo versus 



