JAN. 1898. FLORA OF YUCATAN MILLSPAUGH. 357 



LILIACE.E. 



Smilax Gaumerii sp. nov. Xcoch6. 



Stern cylindrical, striate, climbing 25 feet, armed with strong 

 triangular - flattened prickles, mostly in pairs opposite the 

 branches, sometimes slightly curved at the points; branches sub- 

 cylindrical, striate, more or less zig-zag, aculeate; leaves ovate- 

 lanceolate, taper- pointed, mucronate, oblique at the base, 

 strongly reticulate-veined above and below, 3-nerved, the mid rib 

 furnished with 1-2 recurved prickles; petioles short, jointed at 

 the middle and furnished with a stout recurved prickle at the 

 joint; stipules sheathing, often aculeate and sometimes prolonged 

 into light grey ligneous tendrils. Inflorescence axillary, globu- 

 lar, peduncle about half the length of the pedicels. Leaves i to 

 2.5 inches long, .5 to i inch broad, petioles .25 inch long, stem 

 prickles .25 to .36 inch long. Frequent on forest and brush lands 

 about Izamal, June (687). 



AMARYLLIDACE.E. 



YUCCA YUCATANA Engelm Trans. Acad. St. Louis iii. 37. 

 Ruins of Nohpat, Nov. 24, 1865 (Schott, 706). 



Zephyranth.es Lindleyana Herb. Amaryll. 174. t. 35. f. 5. 



"Herb 8 inches high, very abundant in the town of Izamal, 

 opening its sulphur-yellow flowers in September (836). 



DIOSCOREACE^. 



Dioscorea alata Linn. Sp. PI., 1033. 



Hacienda San Rafael Xteppen, Cult?, Aug. 7, 1865 (Schott, 

 548}. 



Dioscorea calyculata Donnell-Smith, Bot. Gaz. xx, 295. 



"Vine 40 feet, common on vacant and waste lands where it 

 flowers in November" (931)- 



Dioscorea floribunda Mart. & Gal., Bull. Acad. Brux., ix, 391. 

 "Vine 20 feet, common on brush lands, Nov." (925, 926). 



Dioscorea macrostachya Bth., PI. Hartw. , 73. 



"Vine 12 feet, abundant on brush lands, Sept." (794). 



Dioscorea polygoniodes H. & B., Willd., Sp. PI., 795. 

 " Vine 20 feet, common on brush lands, Nov." (928). 



Dioscorea sativa Linn. Sp. PI., 1033. Bolador. 



"Vine 60 feet, rarely cultivated; blooms in October, and pro- 

 duces at every leaf an edible fruit resembling the potato, the 

 large tuberous root is also eaten " (920). 



