or ARTS AND SCIENCES. 157 



Trixis hyposericea. Shrubby, slender, much branched, the 

 brauchlets finely pubescent : leaves linear-lanceolate (2 or 3 inches 

 long by 3 or 4. lines broad), attenuate above, narrowed below to a 

 short petiole, entire, green and nearly glabrous on the upper surface, 

 appressed silky- villous beneath : inflorescence very open, the heads 

 on slender nearly naked peduncles ; involucre of 8 finely pubescent 

 acutish scales in one row, 4 lines long, with 2 or 3 short linear 

 spreading bractlets at base : receptacle very villous : achenes densely 

 puberulent. — In the barranca near Guadalajara; 1888 (n. 1741). 



Lobelia sublibera. Biennial (?), erect and branching, 1 or 2 

 feet high, very finely roughish-pubescent : early radical leaves ovate 

 to elliptical, glandular-serrulate, the cauline distant, linear-lanceolate, 

 acuminate, acute at base, sparingly denticulate : racemes long-pedun- 

 culate, mostly few-flowered, secund ; bracts very small, linear ; pedi- 

 cels 2 to G lines long : calyx-tube almost none, the linear-acuminate 

 lobes (2 lines long) upon a very abrupt ba>e : corolla blue, with tube 

 5 lines long, and the broad lobes of the limb rounded and obtuse : 

 capsule free from the calyx excepting the very short acute base, 

 ovate, 3 lines long. — On cool shaded slopes of the Sierra Madre 

 near Monterey ; July, 1888 (n. 1889). 



Lobelia Pringlei. Stems numerous from an apparently per- 

 ennial rootstock, branching at base and leafy below, finely pubescent 

 throughout: leaves ovate, acutish or the lowest very obtuse, the 

 margin slightly sinuate or entire, 6 to 9 lines long, about equalling 

 the winged petiole : peduncle naked, bearing a loose rather few- 

 flowered raceme (a foot high) ; bracts linear ; lower pedicels about an 

 inch long: calyx turbinate, about half the length of the linear lobes, 

 which equal the tube of the blue corolla (3 or 4 lines long), — Ou 

 limestone ledges near Monterey; June, 1889 (n. 2538). 



Clethra Pringlei. A tree 25 to 40 feet high : leaves oblanceo- 

 late, acuminate, obtuse at the narrow base, entire or sparsely serrate, 

 glabrous above, tomentulose beneath, 3 or 4 inches long by 1 to 1| 

 broad, short-petiolate : inflorescence a terminal sessile racemose pan- 

 icle, hoary-tomentulose throughout ; racemes slender, elongated (4 to 6 

 inches long) ; pedicels slender, 3 or 4 lines long : flowers small ; sepals 

 acuminate, 1^ lines long; petals roundish, shortly fimbriate: style 

 equalling the calyx. — In the mountains east of San Luis Potosi ; 

 June, 1890 (n. 3098). 



Forestiera tomentosa. Branches and leaves (especially be- 

 neath) densely tomentose: leaves entire, subcoriaceous, oblong-ovate, 

 cuneate at base, acutish or obtuse, 9 to 12 lines long, very shortly 



