Oxalidaceae novae mexicanae. 259 



through Mexico and Central America to South America, and from 

 Campeche on the coast to high upon Mount Orizaba. 



19. lonoxalis lasiandra (Zucc.) Rose, 1. c. p. 113. 



Oxalis lasiandra Zucc. Abh. Akad. Muench.. 11, 353; 1834. 



20. lonoxalis lunulata (Zucc.) Rose, 1. c, p. 113. 



Oxalis lunulata Zucc, Abh. Math. Phys. Classe, 1, 200: 1830. 



21. lonoxalis occidentals Rose, 1. c, p. 114. 



Bulbs solitary, deep-seated; bulb scales acuminate, strongly many 

 (about 20) nerved, some of the nerves anastomosing; leaflets 4 to 6, 

 rather thick, strongly notched at apex, cuneate at base, glabrous; 

 peduncles elongated, much longer than the leaves and appearing with 

 them; flowers 4 to 7, on slender pedicels 2 to 3 cm long; sepals 

 broadly oblong, 6 to 7 mm long, rounded or even truncate at the apex, 

 thin with broad purple margins, glabrous, with 3 or 4 glands near tip; 

 petals deep purple above, pale below, 2 cm long; filaments somewhat 

 hairy: styles pubescent. 



Type U. S. National Herbarium no. 301992. collected by J. N. Rose 

 on the road between Bolanos and Guadalajara, but in the State of 

 Zacatecas, September 20. 1897 (no. 3035). 



This is a very beautiful species, worthy of cultivation. 



22. lonoxalis primavera Rose, 1. c, p. 114. 



Bulbs of medium size; scales oblong, very fibrous, the nerves 12 or 

 more; leaflets 3, triangular in outline more or less strongly lobed at apex, 

 the lobes generally broad and rounded at apex; peduncles 20 to 30 cm 

 long, nearly twice as long as the leaves; pedicels and calyx glandular- 

 pubescent even in age; flowers numerous purplish; sepals lanceolate, 

 obtusish, glandular at tip, 5 to 6 mm long; petals 12 to 16 mm long; 

 pubescent within: filaments only slightly pubescent. 



Very common in the lowlands of Tepic and Sinaloa. where it was 

 collected by J. N. Rose, July 2, 1897 (no. 1508). This specimen, the 

 type, from Acaponeta, Tepee, is no. 300348 of the U. S. National 

 Herbarium. 



This plant begins to flower a few days alter the first rains and is 

 one of the very earliest of the herbaceous plants to appear on the dry 

 plains of western Mexico. Later in the season it is so abundant that it 

 becomes a troublesome weed in cornfields. 



This species has been in cultivation since 1897 in the Washington 

 Botanical Garden, where it has flowered several times. 



23. lonoxalis pringlei Rose, 1. c, p. 114. 



Bulbs solitary; leaves radial, several; petioles slender, glabrous; 

 leaflets broadly cuneate, obcordate, glabrous, 10 to 20 mm broad; peduncle 

 15 to 20 cm long, much longer than the leaves, glabrous, 2 to 8-flowered ; 

 involucral bracts small, slightly pubescent, acute, gland-tipped; peduncles 

 12 to 35 mm long, slender; sepals ovate, acute, 4 mm long, glabrous, 

 with scarious margins and gland-tipped; petals blue, yellowish below. 

 10 mm long, 5 filaments longer than the others; capsule linear, elongated. 

 15 mm long. j<7* 



