KOSE — MEXICAN AND CENTRAL AMERICAN PLANTS. 303 



CAESALPINIACEAE. 



NEW SPECIES AND NEW BINOMIALS IN POINCTANA. 



Poinciana calif ornica (A. Gray) Rose. 



Cacsalpinia mexicana californica A. Gray, Proc. Amer. Acad. 5: 157. 1862. 



Poinciana conzattii Rose, sp. nov. 



A email tree; bark grayish, glabrous; leaves glabrous throughout, large; pinnae 

 commonly in 4 pairs, but sometimes with an odd one; leaflets 4 or 5 pairs, oblong to 

 obovate, 15 to 22 mm. long, rounded or refuse at apex; inflorescence a sessile raceme, 

 G to 15 cm. long, glabrous; pedicels about 15 mm. long, slender, jointed above the 

 middle; sepals highly colored, obtuse; petals yellowish red, about twice as long as 

 the sepals; stamen long-exserted, 3 cm. long, somewhat hairy at base; pods scythe- 

 shaped, 5 to 6 cm. long; clothed with a short, close pubescence; seed flat, 8 mm. 

 broad. 



Type U. S. National Herbarium no. 841055, collected by Hugo and C. Conzatti at 

 Tehuantepec, Mexico, in 1909 and now in cultivation in the Botanical Garden in 

 Oaxaca City. 



Poinciana melanadenia Rose, sp: nov. 



A low, bushy shrub; branches short, nearly black; leaves with 3 pinnae; petiole 

 and rachis both glandular and thinly pilose, slender; leaflets 4 to 6, oblong, 5 to 8 mm. 

 long, obtuse, pubescent or glabrate with black glands along the margins; peduncle 

 short; inflorescence usually a raceme, short, sometimes 15-flowered but sometimes 1- 

 flowered; pedicels bearing etipitate glands, otherwise smooth, jointed above the 

 middle; stamens a little longer than the petals, hairy at base; pods 3 cm. long, scythe- 

 shaped, pubescent and bearing large sessile glands. 



Type U. S. National Herbarium no. 454032, collected by J. N. Rose, near Tehuacan, 

 September 1, 1906 (no. 11249). 



Poinciana mexicana (A. Gray) Rose. 



Caesalpinia mexicana A. Gray, Proc. Amer. Acad. 5: 157. 1862. 



Poinciana palmeri (S. Wats.) Rose. 



Caesalpinia palmeri S. Wats. Proc. Amer. Acad. 24: 47. 1889. 



Poinciana pannosa (Brandegee) Rose. 



Caesalpinia pannosa Brandegee, Proc. Cal. Acad. II. 2: 150. 1889. 



Poinciana placida (Brandegee) Rose. 



Caesalpinia placida Brandegee, Proc. Cal. Acad. II. 3: 131. 1891. 



Poinciana sessiliflora (S. Wats.) Rose. 



Caesalpinia sessilijlora S. Wats. Proc. Amer. Acad. 21:450. 1886. 



OXALIDACEAE. 



NEW AND RECENTLY DESCRIBED SPECIES OF IONOXALIS. 



In 1906 I published in the Contributions a partial report upon the 

 very large series of specimens of Ionoxalis which had accumulated in 

 the National Herbarium. About this time Dr. J. K. Small was finish- 

 ing his revision of the Oxalidaceae for the North American Flora and 

 I therefore turned over to him all my notes and specimens. Of the 

 65 species which he treated all but 9 are Mexican and nearly all (at 

 least 60) are represented by material in the National Herbarium. Of 

 these about 40 had been collected by me; of the new ones described 

 14 were of my collecting. Two species additional to those in the North 

 American Flora are also here described. 



