— 
hi et 
1897 | UNDESCRIBED PLANTS FROM SOUTH AMERICA 241 
Oxalis vulcanicola Donnell Smith.—Trifoliastrum totum prae- 
ter flores ferrugineo-pilosum, radice fibrosa, caulibus decum- 
bentibus ramosis, stipulis ad apicem liberis. Foliola obovata, 
lateralia paulo minora et ad basin inaequalia, apice deltoideo- 
emarginato. Pedunculi folia superantes multiflori, pedicellis 
gracilibus. Sepala glabra lineari-lanceolata petalis dimidio brev- 
iora staminibus majoribus triente pistillo dimidio longiora. 
Filamenta glabra. Capsula oblonga sepala aequans, loculis 
oligospermis. 
Herbaceous, 1-2 ft. long, towards extremities sericeous. Stipules linear, 
adnate except the triangular apex. Petioles 3-14 in. long. Leaflets sub- 
sessile, pilose especially beneath, 7-11 5-7 1., the terminal one cuneate at 
base, the lateral rounded below on the outer side. Peduncles axillary, single, 
filiform, 2~4 in. long, cymes 6—12-flowered; pedicels subaggregated, 4-6 1. 
long ; bracteoles linear, 1-2 1. long. Sepals 3-3 % L. long, the alternate ones 
narrower and linear. Petals yellow, streaked with violet, 6-7 1. long. Pistil 
1-4 to the cell, oval, % 1. long, rugose, red.— Nearly related to O. pubescens 
HBK., which differs by an erect habit, smaller flowers, broad sepals, barbate 
filaments. 
Borders of a stream at Sitio Birris, Volc4n Irazu, Costa Rica, alt. 8500 ft., 
Mch. 1888, P2ttier, no. 164 herb. nat. C. R.—Valley of Los Arcangeles, Volcan 
Trazt, alt. 5700 ft., May 1888, Pittier, no. 70 herb. nat. C. R.—Southeastern 
flank of Volcan Poas, C. R., alt. 5700 ft., Jan. 1889, Pitter, no. 86g herb. nat. 
C. R.—Volc4n Turrialba, C. R., alt. 7000 ft., F. N.-Cox, no. 4757 Pl. Guat., 
€tc., qu. ed. Donn. Sm. sub O. Pilosissima Turcz. 
Impatiens Turrialbana Donnell Smith—Glaberrima. Folia 
opposita longe petiolata oblongo-elliptica utrinque acuta supra 
medium remote serrata. Pedunculi solitarii filiformes biflori. 
Flores toti concolores purpurei. Sepala 3, lateralia orbiculari- 
ovata petalum anticum cucullatum aequantia, saccus aeque latus 
atque longus a petalis lateralibus paulo superatus, calcari brevi 
incurvo ad apicem inflato. Ovarium in unoquoque loculo bi- 
spermum. 
A large herb; branches dichotomous, sulcate, leafy chiefly Senmanvile the 
end. Leaves 24-3 in. X 10-14 L., apiculate with a mucro, attenuated into 
petioles g~15 1. long, often entire, paler beneath. Peduncles pies in ee 
pedicels 3-1 in. 1 Flowers minutely setulose-pun 
ong. Anterior 
Sepal o, the lateral 4 1. — — subcordate at base, spelt, colored 
