78 BOTANY. 



vided style) ; filaments from an ovoid-triangular base, false partitions entire, 

 membranous; stipular glands evident, (as they are in my specimens of the 

 following species). My specimens are very slightly glaucous. (15.) Gravel 

 hills back of Santa Fe", N. Mex., at 7,050 feet altitude. 



LnNUM Berlandieri, Hook. — Erect, annual, stem distinctly striated, 

 slightly puberulent ; lower leaves obtuse, upper slightly mucronate, longer 

 on the average than in the preceding species, which it so closely resembles 

 that I know of no way of distinguishing them, save by the character of the 

 false dissepiments (as indicated by Dr. Engelmann in PI. Wright. 1, pp. 25 

 and 26), which, in L. Berlandieri, are membranous in the upper and inner 

 half. Under head of L. Berlandieri, Dr. Engelmann alludes to a small form 

 collected by "Wright on the San Pedro River, which is apparently kept apart 

 from L. rigidum, var. puberulum (collected on the Cimarron), only by the 

 character of the false partition in the ovary, which is decidedly that of L. 

 Berlandieri. I have the precise form (from Santa Fe") he alludes to (so 

 far as can be determined from description), and have, from its partitions 

 and ovate-triangular-based filaments, been obliged to put it under L rigi- 

 dum, var. puberulum. Single specimens found by Dr. Loew at Rancheiro 

 Springs, Arizona. 



Li.num perenne, L. — Widely diffused over Nevada, Utah, Colorado, 

 Arizona, and New Mexico, where it has been obtained by the Expedition ; 

 extending, besides, from the Arctic Ocean to Mexico and west to the Pacific. 



MALPIGHIACE^.* 



AspiCARPAf longipes, Gray (PI. Wright. 1, p. 37). — Stems several, 



* Malpighiaceje. — " Calyx 5-merous, persistent, segments usually biglamlular. Petals 5, usually 

 unguiculate, isostemouous, or diplostemonous, inserted either on the receptacle or on a hypogynou9 or 

 perigynous disk. Stamens iuserted with the petals, usually monodelphous, when soveral are antherless. 

 Ovary composed of 3 or 2 carpels, connate, or distinct at the top, of 3 or 2, l-ovu!ed cells, ovule nearly 

 orthotropous. Fruit a drupe or of 3-2 cocci. Embryo exalbumiuous. Stem woody." — Le Maout & 

 Decaisne (English edition). 



tAsPiCAHPA, Lagas. — Flowers dimorphous. Normal ones: — Calyx 5-parted, with 10 glands. 

 Petals clawed, fimbriate-ciliato. Stamens 5, 2 perfect, 3 without anthers or tho middle one of them with 

 a perfect anther, and the lateral ones with imperfect anthers. Ovaries 3, connate to the axis, style 

 central, apex obliquely truncate. Fruit i [See specific description.] Abnormal floivcrs :— Calyx without 

 glands. Petals none. Anthers siugle and rudimentary. Ovaries 2, without styles. Nut solitary, either 

 crestless, or with 1-3 slightly prominent dorsal crests, irregularly pyramidal 3-angled. Seed compressed, 

 subreniform, testa membranous, cotyledons obovate, flattish, curved.— Slender, erect, branching shrubs, 

 with tho branchlets frequently covered with appressed hairs. Leaves opposite, entire, frequently silky, 

 stipules inconspicuous. Normal flowers mostly umbelled, terminal or axillary, rarely solidary, yellow ; 

 abnormal, axillary, solitary, very small.— Bentham & Hookek. 



