ot 
5 
. 
neh ae 
PLANTH FENDLERIANE. ¢ 79 
372. AMBROSIA CoRONoPIFOLIA, Torr. §- Gray, Fl. 2. p. 291. Santa Fé to Coun- 
cil Grove; Aug., Sept. (402.) 
+373. A. LonaistyLis, Nutt.? Low places, Santa Fé 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- 
sefia. 
t : ; 
+374. A. Loneistyiis, Nutt. ? var. With the last; a stouter and more hispid form; 
the fertile flowers undeveloped. (407.) — Except that the leaves are more compou nd, 
it is not unlike the Mexican plant referred by De Candolle to A. Peruviana, Willd. 
+375. A. aprera, 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. Franserta Hooxerrana, Nutt.; Torr. & Gray, Fl. 2. p, 292. (Ambrosia 
acanthicarpa, Hook.) Santa Fé, near the creek; Oct. (409.) — The fertile involucre 
is one-celled.* 
BS 
* 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., § in Emor. Report, p, 143 (absq. char.). 
Capitula monoica homogama, secus rachin persistentem glomerato-spicata. Mas. Involucrum Franserie, 
5 — 6-lobum, 15 —-20-florum. Receptaculum parvum, paleis scariosis unguiculatis obovato-dilatatis onustum. 
Corolla cyathiformis 5-dentata. Antherz conniventes vix connate, appendicula deltoidea inflexa superate. 
Ovarium vix ullum: stylus apice radiato-penicillatus. Fem. Involucrum fructiferum obovoideum seu fusi- 
formi-clavatum, coriaceum, clausum, uniloculare, uniflorum, apice in rostrum tubuliforme superne scariosum 
pervium desin ns, 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. Satsota ( Torr. & Gray, 1. 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. monocyra (Torr. § Gray, 1. c.): involucro turbinato-fusiformi exangulato inferne nudo versus 
* 
