New SPECIES OF SOUTH AMERICAN PLANTS 23 
Lepidium angustifolium 
Gray-green, dn Hike: appressed z hairs. Stems pe 
1 to 2 dm. high, ascending gent an an sa root, very slender 
—— almost to the Gave ortio rat s 1.5 to 3 cm. lo ong, 
to 3 mm. wi linear- ri O R ontace eoadailly nar- 
bale into a Morea like base, entire, thin, the venation not 
perceptible. Inflorescence te loose, without bracts. 
Pediczls in flower 5 or 6 mm. long, in fruit, but little longer. 
Sepals 1.5 mm. long sad a “iais more oa an half as wide, oval, 
liist thickish, green with purplish tips. Petals white and 
purplish, 4 mm. long, 2.5 mm. wide, the claw a fourth of the 
length, the limb viec elliptical. grin more than half the 
length of the petals, the filaments rather stout. Pistil half the 
length of the petals, the ieai oval, a little ae than the 
stout style, the dorem large, capitate. Capsule 3 mm. long, 
including the very short persistent style, two- Eon as wide, 
oval and nearly ‘elliptical, green with purple margin 
a Paz, Bolivia, by side of river, along fad. to Obrajes, 
3,500 meters, May." (Otto Buchtien, No. 2848.) 
Radicula scabra. 
Gray-green and rough-hairy throughout. Stems to 8 or 
IO cm. long, prostrate or ascending, densely massed, stoutish 
but weak, somewhat branching. adical leaves in a dense 
rosette, 4 to 7 cm. long, 6 to 10 mm. wide, oblanceolate in gen- 
eral outline, gradually narrowed into a margined petiole of 
variable length, pinnatifid, the divisions successively smaller 
more remote toward the base, the larger ones 4 or 5 mm 
long and nearly as wide, ovate or obovate, obtuse or acutish, 
entire or some obscurely crenate- dentate, the base broad, thick. 
Flowers in a terminal, leafy-bracted raceme, the pedicels very 
short. Calyx 2 mm . long, ovate, obtuse, thin, wise Petals 
a little longer than the sepals, spatulate, unguiculate. Stamens 
of same length, the filaments thick, the anthers Muy small, 
oblong, versatile. Ovary longer than perigone, pilose, oval, 
the style very short and thick, the stigma capita Pod 7 
long, 2.5 mm. wide, oblong, lightly compressed, Gira Or slightly 
curved, the sepals persistent, tipped by the short jas rough- 
hairy. Seeds on filiform funicles, ad mg] sub-ro 
la Paz, Bolivia, 4,100 meters altitude, April eig (Otto 
Buchtien, No. 587). No. 2846, La Paz, 4,000 meters altitude, 
March 1910, is the same. 
" Mathewsia diffusa Rusby”, Bull N. Y. Bot. Gard. 
4:322 (1907), proves to be an extremely large and robust form 
of a Radicula, with woody base, perhaps R. nana (Wedel.) n. comb. 
