284 BOTANY. 



Feaxinus viridis, Mx. Collected also by Dr. Palmer in the same re- 

 gion ; branclilets, petioles and midveins finely pubescent. 



NYCTAaiNACE^. 



MiRABiLisi Califoenica, Gray. Bot. Mex. Bound. 173. Glabrous or 

 more or less viscid-pubescent ; stems several from a woody base, 1-2° long, 

 ascending, branches spreading; leaves 6-15" long, fleshy, rounded-ovate, 

 subcordate at base, obtuse on short pedicels, the floral ones subsessile ; invo- 

 lucre 1 -flowered, 5-cleft, 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, 14" long. — 

 Southern California and Western Arizona. Virginia and Pah-Ute Mountains, 

 Nevada ; 5-6,000 feet altitude ; June, July. (963.) 



OxYBAPHUs ANGUSTiFOLius, Sweet. Gray, I. c, 175. Stems glabrous, 

 ascending, slender, 1-6° high; leaves glabrous, linear, usually elongated, 

 (2-4',) repand, thick, glaucous ; peduncles and involucre pubescent ; flowers 

 loosely panicled ; involucre with 5 triangular or ovate acutish lobes, 3-5-flow- 

 ered, becoming 5" long in fruit ; perianth short, subcampanulate or rotate- 

 funnelform, scarcely exceeding the involucre, the limb IV 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.) 



Abeonia^ feageans, Nutt. More or less viscid-pubescent; stems several, 

 herbaceous from a perennial root, ascending, ^-14° high ; leaves oblong or 

 ovate, 1-2^' long, truncatfe or more or less cuneate 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 



' MIEABILIS, L. luvolaore herbaceous, scarcely clianged in fruit, calyx-like, of united leaves, 

 S-lobed, 1-12-flowered. Calyx tubular or more or less broadly funnolform. Stamens almost always 5, 

 united within the persistent base of the calyx. Stigma capitate, granulated. Fruit indurated, smooth, 

 ovoid, not angled and scarcely or not at all ribbed. Seed straight, .with incurved embryo, inferior radi- 

 cle, and foliaceous cotyledons. — Herbs with jointed stems, opposite leaves, and flowers solitary in the 

 axils or in crowded terminal clusters. 



^'ABEONIA, Juss. Involucre perfect, of 5-15 distinct leaflets, the head mauy-flowered. Calyx 

 salverform with obcordate lobes. Stamens 5, included, adnate to the tube. Style included ; stigma cap- 

 itate or linear-clavate. Perfect fruit 5-winged. Seed cylindrical, smooth. Embryo by abortion mono- 

 cotyledonous, enfolding the central mealy albumen.— Low herbs, with thick opposite petioled unequal 

 leaves; peduncles axillary and terminal, and flowers in solitary involucrate heads. 



