1480 L- Radlkofer. — Sapindaceae. 



glabrous, 4 cm long or less, serrate, finely reticulate-veined, shining, those of the 

 terminal segment acute or acuminate, those of the lateral segments rounded or obtuse; 

 peduncles about as long as the leaves, glabrous; tendrils very slender, 2 — 4 cm long; 

 panicles puberulent nearly as long as the peduncles; Samaras glabrous, about 

 15 mm long, the wing finely reticulate-veined, about 4 times as long as the body and 

 only partially enclosing it.<< 



In Trinidad: Britton et Hazen n.H72 (Palo Seco, dry thickets). 



Serjania oaxacana Standley, Trees and Shrubs of Mexico, in Gontr. U.S. Nat. Herb. 

 XXIII. (1923) 695. — »Brauches obtusely trigonous, tomentulose; leaves biternate, 

 the leaflets rhombic or rhombic-ovate, 1,5 to 4,5 cm long, acute or acuminate, coarsely 

 incised-crenate and often lobate, glabrate above, densely puberulent beneath; outer 

 sepals glabrate, the inner tomentulose; petals 2,5 mm long; fruit 9 to 12 mm long, 

 14 mm broad, appressed-pilosulous, densely so on the cells.<< 



In Mexico: Purpus n. 6689 (Oaxaca, San Geronimo). 



Serjania pacifica Standley, Trees and Shrubs of Mexico, in Contr. U. S. Nat. 

 Herb. XXIII. (1923) 699. — >>Stems pilosulous, 5-sulcate; leaves bipinnate, the 2 lower 

 pinnae trifoliate, the 2 upper pairs of leaflets and the terminal one simple; leaflets 

 oblong-ovate, ovate, or oblong-oval, 2 to 6 cm long, obtuse or acute, puberulent beneath, 

 remotely crenate-serrate or subentire; sepals puberulent; petals 2,5 mm long; fruit 

 reddish, 10 to 12 mm broad, the wings glabrous, the cells thinly hirtellous or glabrate.« 



In Mexico: Rose, Standley et Russell n. 14189 (Tepic, Acaponeta). 



Serjania Rekoi Standley, Trees and Shrubs of Mexico, in Contr. U. S. Nat. Herb. 

 XXIII. (1923) 696. — >>Sap milky; stems glabrous, acutely trigonous, 6-sulcate, the 

 3 outer fascicles of wood subterete; leaflets ovate or oblong-ovate, 5 to 7,5 cm long, 

 acuminate, coarsely sinuate-serrate, subcoriaceous, lustrous, glabrous; outer sepals 

 glabrous; petals 3 mm long; fruit about 2 cm long and nearly as broad, glabrous, the 

 cells subglobose.<< 



In Mexico: Reko n. 3509 (Oaxaca, Las Pilas [Cerro Espino]). 



Serjania yucatanensis Standley, in Field Mus. Nat. Hist. Publ. 277. VIII. (1930) 

 21. — »Frutex alte scandens, ramulis vetustioribus subteretibus griseis, novellis brunnes- 

 centibus 6-sulcatis glabris, internodiis elongatis; corpus lignosum e centrali subtereti et 

 periphericis 3 parvis approximatis semiteretibus compositum; petioli validi 3 — 5 cm 

 longi glabri; folia palmatim 3-foliolata, foliolis sessilibus, ovatis, elHptico-oblongis vel 

 ellipticis, 5 — 14 cm longis, 3 — 7 cm latis, versus apicem obtusum vel acutiusculum 

 angustatis, basi acutis et abrupte in acuminationem longam petioliformem contractis, 

 versus apicem breviter et remote grosseque crenato-serratis vel saepius integris vel 

 subintegris, subcoriaceis, glabris, supra viridibus, subtus multo pallidioribus; paniculae 

 in axillis foliorum reductorum insertae, breviter vel longe pedunculatae, multiflorae, 

 subdensae, 5 — 9 cm longae, ramis sparse minuteque tomentulosis vel glabratis, pedi- 

 cellis plerumque 2 — 3 mm longis, bracteis minutis et inconspicuis; sepala interiora 

 3—3,5 mm longa, concava, subdense tomentosa, exteriora breviora, rotundata, minus 

 dense tomentosa; petala sepaHs interioribus subaequaHa, glabra; fructus (immaturus) 

 glaber, dissepimentis latis, lateribus locuH firme coalitis, loculis 5 mm longis latisque, 

 irregulariter grosseque exsculptis, ala 13 mm longa et 10 mm lata.<< 



In Yucatan: G. F. Gaumern. 23676 (Ghichankanab, April 1917, typus), n. 23596, 

 23595 (Kancabtsonot), n. 23715 (Ghichankanab), n. 24419 (without definite locality); 

 Johnson; Millspaugh n.l533, 1554 (Gozumel Island). 



>>In a genus so complex as Serjania, it is difficult to suggest relationships of species 

 with reasonable accuracy, and any Suggestion is likely to be misleading. In the writer's 

 key to the Mexican species (Gontr. U. S. Nat. Herb. 23: 692, 1923) this Yucatan plant 

 runs at once to S. heterocarpa Standl., a species to which it is not closely related.« 



