Revision of the Genus Wislizenia. 131 



5. Wislizenia pacalis sp. nov. 



Wislizenia Palmeri, Brandg. Proc. Calif. Acad. 2 ser. 2 : 128 in part, not 

 of Gray. 



Branches stout, often tortuous or flexuous, not quite glabrous, red-dotted 

 or purplish : leaflets always 3, oblong, usually very obtuse or even retuse 

 or emarginate, 2-3 cm. long : racemes remarkably short, sessile : fruit short, 

 only 3-4 mm. wide ; carpels mostly round-obovate, in some specimens 

 longer and subpyriform, the prominent striae 5 only, ending in a more or 

 less distinct low tubercle, the intervening spaces conspicuously reticulate. 



La Paz, Lower California, 1890, Edw. Palmer, his No. 88 as in U. S. Herb, 

 the type ; but collected earlier, namely in 1889 at San Juanico by Brandegee, 

 and at the same place by Anthony in 1897. Also in 1897 it was collected 

 at La Paz by Mr. Rose, No. 1311 as in U. S. Herb. ; but these specimens 

 have longer and even acutish leaflets ; but the peculiarly reticulate carpels 

 are about the same in all and are far more like those of the Texan and 

 original W. refracta than like those of W. Palmeri; and Mr. Rose found 

 himself unable to refer them to either species ; his label bearing, in his 

 hand, nothing but the name of the genus. 



6. Wislizenia scab rid a Eastw. 



Wislizenia scabrida, Eastw. Bull. Torr. Club, 30 : 490. 



Low leafy habit of W. melilotoides, and with like broad leaflets, but not 

 fastigiate, the branches widely spreading, the basal rising with a curve, the 

 whole plant even to the margins of the growing leaflets scaberulous : leaf 

 lets at apex usually truncate, or not rarely quite retuse: carpels short, not 

 rounded or tapering, short-subcylindric, closely turgid-ribbed, the truncate 

 summit coarsely low-tuberculate. 



Apparently common in the vicinity of Tucson, southern Arizona, where 

 it was collected by Lemmon in 1880, Pringle in 1881, and later by Tourney 

 and others. 



7. Wislizenia fruticosa sp. nov. 



Wislizenia Palmeri, Brandg. Proc. Calif. Acad. 2 Ser. 2 : 128 in part, not of 

 Gray. 



Low, compact, suffrutescent, with yellowish and shining bark on woody 

 parts of stem, the flowering branches short, fastigiate, densely leafy, all 

 parts glabrous, yellow-green; leaves with short stout petioles, the 3 leaflets 

 notably unequal, oblong, acutish, the terminal one 3 cm. long, the laterals 

 little more than 2cm.; racemes short, sessile; pedicels much elongated: 

 fruit about 5 mm. wide; carpels pyriform, but widened at summit into a 

 broad crown of large somewhat spreading tubercles developed abruptly 

 from the termini of the ribs, the intervening striae not crowded on the sides 

 of the carpel, but running into some few distinct reticulations. 



Lower California!! species, so far as known collected only by Mr. 

 Brandegee, at Calamujuet, May 11, 1889; the type specimen being in U.S. 

 Herbarium. I see nothing in this type from which one may infer even a 



