284 BOTAOT. 
Fraxinus viridis, Mx. Collected also by Dr. I^iluicf in tlic same re- 
gion ; branclilets, petioles and midveins finely pubescent. 
NYCTAGINACEiE. 
MiRABiLLS^ Californica, Gray. Bot. Mex, Bound. 173. Glabrous or 
more or less viscid-pubescent ; stems several from a woody base, 1-2° long, 
ascending, branches si^rcading; leaves 6-15" long, fleshy, rounded-ovate, 
subcordate at base, obtuse on short pedicels, the floral ones subsessile ; invo- 
lucre 1-flowered, 5-clefl, segments triangular-ovate, acute, somewhat unequal ; 
perianth rose-color, rather small, (3" long,) campanulate-rotate, the lobes 
emarginate; stamens usually 5, exserted; fruit smooth, ovate, 11" long. — 
Southern California and Western Arizona. Virginia and Pah-Ute Mountains, 
Nevada ; 5-0,000 feet altitude ; June, July. (963.) 
OxYBAPiius ANGUSTiFOLius, Swect. Gray, I lib. Stems glabrous, 
ascending, slender, 1-6"^ high; leaves glabrous, linear, usually elongated, 
(2-4',) repand, thick, glaucous ; peduncles and involucre pubescent ; flowers 
loosely paniclcd ; involucre with 5 triaugular or ovate acutisli lobes, 3-5-flow^'- 
ered, becoming 5" long in fruit ; perianth short, subcampanulate or rotate- 
funnelform, scarcely exceeding the involucre, the limb Ih" long; stamens 
exserted ; fruit hoary pubescent, 2^" long. — From Western Texas and Chi- 
huahua to Southern Idaho, Nebraska and Minnesota. Foot-hills of the 
Wahsatch, from Salt Lake City to Provo City ; May-August. (964.) 
AuRONiA^ FRAGRANS, Nutt. More or less viscid-pubescent ; stems several, 
herbaceous from a perennial root, ascending, j-li° high ; leaves oblong or 
ovate, l-2i' long, truncate or more or less cuneatc at the base, obtuse or 
acutish ; peduncles mostly solitary, elongated ; bracts of the involucre large, 
broadly ovate, white and scarious, obtuse or acute, 4-9" long, often equaling 
the whitish flowers ; stamens unequal ; stigma clavate ; fruit 3-6" long, coria- 
ceous, with narrow undulate coarsely reticulated wings, not crested, often 
'MIRABILIS, L. Involut ic liorbaceoits, scarcely changed ia fruit, calyx-like, of iinited leaves, 
.^)-lolje<l, 1-12-flowored. Calyx tubular or more or less broadly funuelforui. Stamens almost always 5, 
united w ithin the iicrnistout base of the calyx. Stigma capitate, granulated, Fruit indurated, smooth, 
ovoid, not angled and seareely or not at all ribbed. Seed straiglit, with incurved embryo, inferior radi- 
cle, and Ibliaceous cotyledons. — Herbs with jointed stems, opposite leaves, and flowers solitary in the 
axils ni- in eruwdcd ttTniinal clusters. 
-■ AI5K* t>'lA, .Jrss. Involucre perfect, of 5-15 distinct leaflets, the head many-flowered. Calyx 
salverform with obeoidatf lobes. Stamens 5, included, adnate to the tube. Style included ; stigma cap- 
itate or litiear-clavate. IN iiect tVuit 5-winged, Seed cylindri(;al, .smooth. Embryo by abortion mono- 
cotylfdnnons. enfttlding the ecntral mealy alliumen. — Low herbs, Avith thick opposite petioled unequal 
leaves; peduncles axillary and terminal, and flowers in solitary involucrate heads. 
