544 Franz Niedenzu. — Malpighiaccae. 



nullis. Umbellae 4-florae (floribus tantum 2[ — l] evolutis, 2[— 3] dz abortivis) termi- 

 nantes ramulos axillares immediatim sub umbella (i. e. apice »pedunculi« usque 2 cm 

 longi) 2 foliola usque 1 y 2 cm longa gerentes, bracteis bracteolisque lineari-lanceolatis 

 2 mm resp. 1 — 1 y s mm, pedunculis floriferis 3 — 7 mm longis, pedicellis plerumque 

 1 — 2 mm ipsis longioribus. Flores 1 — 1 i / i cm diametro. Sepala ovata parce extus 

 sericea glandulas rotundas vel ovales 2 / 3 — paulo ultra 1 mm longas apice solutas zh 

 2 mm superantia. Petala crocea carnosula, limbo orbiculari cavo crispulo margine in- 

 tegro 3 — 3Y2 mm > ungue directo 2 — 2V2 mm longo. Stamina vix exserta styloque 

 i / 2 mm superata, antheris semiglobosis y 2 — 2 /$ mm longis. Pollen 30 — 35 f-i diametro. 

 Samarae 1 — 3 in quoque fructu maturae parce sericeae: Nux globoso-ovoidea apice 

 acuminata 4 mm alta 2*/ 2 mm diametro, areola ventrali cava orbiculari 1 y 2 mm dia- 

 metro; ala dorsalis patula 2 trientibus nucis superioribus affixa obliquo- ovata vel ovalis 

 6 — 8 mm longa super nucis acumen apicale facie ipsius ventrali fere usque areolam 

 decurrens. 



Mexico (Mex. Boundary Survey n. 186; Pringle n. 651: Felsenhügel bei 

 Chihuahua). — Arizona (Lemmon n. 2648 [IV. 4 880]: Sa. Catalina Mts. ; Pringle 

 IV. 1884: Sa. Catalina Mts.; Jones n. 3944: Yucca; Parish n. 224; Arnold Arbo- 

 retum [leg. Rehder] n. 223: Tucson, und n. 494: Sabine Canyon, Sa. Catalina Mts.). — 

 Neu-Mexico (Wright Exp. from West-Texas to El Paso n. 96 und n. 933; 

 Berlandier n. 3121). 



3. J. californica Bentham Bot. Voy. Sulph. (1844) 8, tab. 4; Small in N. Am. Fl. 

 XXV. 2. (19(0) 146; Niedenzu in Verz. Vorles. Ak. Braunsberg W.-S. 1912—1913 

 (1912) 51. — Gaudichaudia californica Chodat in Bull. Soc. bot. Geneve 2 . ser. IX. 

 (1917) 100. — Aspicarpa californica Hassler in Ann. Cons. et Jard. bot. Geneve XX. (1918) 

 2 12. — »Folia ovata lanceolatave acuta, basi subcordata. 1 y 2 — 4 cm longa, utrinque 

 — sicut ramuli — sericeo-pilosa ; petiolo brevi eglanduloso. Pedunculi axillares dicho- 

 tome vel umbellatim 2 — 8-flori.« Sepala oblongo-ovata 2 mm longa, glandulis 1 mm 

 longis. Petala majora 5 — 6 mm longa. Samarae 9 — 11 mm longae, ala oblique ovata 

 9 mm longa 5 mm lata; nux elongato-ovoidea 4 mm alta, latere utroque nervis 5 — 6 

 longi trorsis (i. e. alae parallelis) valde prominentibus et basi dorsi tubere obtuso l / 2 mm 

 alto ornata. 



Mexico (Palmer n. 200: Topolobampo). — Californien (Unbekannt. Samml.: 

 Am Magdalena-Busen). 



Species incertae mihi invisae. 



1. Janusia mexicana Brandegee in Zoe V. 10. (1905). — "Sterns suffruticose, 

 twining, 1 m long and less, the new growth pubescent; larger leaves ovate acuminate, 

 mucronate, pubescent, lighter colored beneath, 5 cm long, 2 — 3 cm wide; petioles 5 mm 

 long; inflorescence axillary in 3 — 4-flowered corymbs; peduncle 4 mm long; pedicels 

 3 — 5 mm long, with two leafy bracts at their bases, white hirsute; bractlets minute; 

 petals 5, clawed, 8 mm long, the orbicular dentate-lacerate limb 5 mm in diameter, 

 orange-yellow; fertile stamens 2, their filaments 4 mm long, united near the base; the 

 anthers orbicular glabrous; style basilar, exceeding the stamens; stigma capitate; calyx 

 lobes oblong-lanceolate, two biglandular, 2 uniglandular, one usually glandless, glands 

 deciduous with age; mature fruit one carpel, dorsal wing 1 cm long, 5 mm broad, the 

 lateral wings short, with a short crest. — No cleistogamous flowers were found with 

 the specimens. — Cerro Colorado and Culiacan." 



Nota. A Janusia californica Benth. mihi non differre videtur. 



2. J. prolixa Arechavaleta in An. Mus. Nac. Montevideo III. (1901) 186. — 

 »Raiees numerosas, rojizas. Tallos trepadores, de 1 — 2 metros de altura, delgados, 

 provistos de pelos blancos acostados. Hojas de 2 — 3 cm de largo, ovaladas ö aovado- 

 agudas, un tanto escotadas en la base terminadas en punta alezuada diminuta, vellosas 

 en ambas caras, mäs en la inferior, peciolos de 5 — 10 mm vellosos, 2-glandulosos 

 hacia la extermidad superior. Umbelas axilares con 4 — 5 flores, eje comün de 4 cm 



