ROSE MEXICAN AND CENTRAL AMERICAN PLANTS. 117 



by Doctor Watson with 0. now Lotoxalis) berlandieri, from which it differs especially 

 in its foliage. 



P. madrensis (S. Wats. 1; 



Oxalis madrensis S. Wats. Proc. Am. Acad. 25: Ml. L890. 



Stems much branched, creeping, pubescent; leaflets obovate, obtuse or retuse, 10 

 to L2 nun. Ion-: sepals obtuse, 6 i" s nun. I'-n-. 



Only known from mountains near Monterey, Nuevo Leon. Collected by ( G. 

 Pringle, .Inly L6, 1889 qo. 2867). 



LINACEAE. 

 TWO NEW SPECIES OF LINUM. 



Linum long-ipes Rose, 8p. nov. 



Annual, erect, 20 to 30 '-m. high, simple below, branching above, slightly hairy; 

 Lower leaves in whorls, oblong t<> obovate, l<> to L5 nun. long, obtuse, shortly l»nt 

 distinctly petioled, vn-y thin; upper leaves attenuate, acute, stipular glands wanting; 

 pedicels slender. L0 to 20 nun. long; sepal- 2 to 2.5 inm. long, ovate, acuminate, 

 slightly glandular-ciliate; petals yellow, aboul twice as 1 « • 1 1 _: as the sepals; styles 

 slender united, nearly to the top, valves LO; carpels small, without cartilaginous 

 insertions at base. 



Type I'. S. National Herbarium qo. 381811, collected by C. <'. Pringle, in moun- 

 tains near [guala, Guerrero, October 11, 1900 (no. 9261). 



This species resembles somewhat /.. cruciatum, bul has the styles united, the pedi- 

 cels longer and glabrous, etc. 



Linum nelsoni Rose, sp. qov. 



Perennial, much branched at base, the branches long, often weak, perhaps some- 

 times procumbent, when young pilose; lower leaves in whorls, oblong, 10 to L5 mm. 

 long, obtuse, at 6rst pilose, becoming glabrate, the uppermost leaves alternate. 

 acute; inflorescence open; pedicels pilose; sepals ovate, acute: petals yellow. 

 mm. long; capsule 10-valved. 



Type l". S. National Herbarium no. 469215, collected by E. W. Nelson at Boca del 

 Monte. Vera Cruz, March 13, 1894 (no. 210). Also collected by C. A. Purpus, on 

 Ixtaccfhnatl. January. L903 (no. 67). 



BALSAMEACEAE. 

 RESTORATION OF TEREBINTHUS, WITH ITS SPECIES. 



The ancient name Terebinthus was adopted by Tournefort, Ray, and 

 other well-known authors, butwas discarded by Linnaeus for Pistacia, 

 a name almost, it' not quite, equally ancient. In accordance with the 

 present practice in nomenclature Pistacia must remain the name of the 

 genus to which Linnaeus applied it. Mr. William F. Wight has called 

 my attention t<> the fart that the name Terebinthus, however, is valid 

 for another genus, that to which it was first applied by a post-Linnaean 

 author. This first use was by Patrick Browne in L756, a who based 

 bis genus on a single species, Pistacia simaruba L., winch will there- 

 fore he the type of Terebinthus.'' Although the Linnaean binomial is 

 not given by Browne, the three following references, "Pistacia foliis 

 pinnatis deciduis, foliolis ovatis. L. Sp. PL Terebenthus major Betu- 

 lae cortice, etc. Slo. ('at. L67 & II. Simaruba. L. ML Med.", unmistak- 



"Civiland Natural History of Jamaica, p. 345. 



& For citation and synonymy see Terebinthus simaruba in li-t below. 



