FEB. 1903. PLANTVE YUCATANJE MILLSPAUGH & CHASE. 17 



COIX L. Gen. PI. 1043. 



Spikelets monoecious, the staminate above, panicled, projected 

 out of the orifice of the bony involucre, the pistillate below, enclosed 

 by the ovate or spherical ivory-like sheath of the subtending bract. 

 Stamens 3. 



Coix lachryma-Jobi L. Sp. PI. 972. 



Inflorescence of 1-5 spikes exserted at maturity; peduncle angled, 

 glabrous. Staminate spikelets i or 2-flowered, flattened dorsally, in 



2's or 3's, one pedicellate, 4-5 x 10 

 mm. ; first glume obovate', obtuse, 

 2-nerved, the nerves broadly winged 

 above, margin of the glume inflexed; 

 second glume slightly shorter, ovate, 

 acute, 6-nerved; floral glumes 9 mm. , 

 ovate, hyaline, 3-nerved; palea equal, 

 hyaline except base which is mem- 

 branaceous. Pistillate spike of i 

 fertile and i or 2 sterile spikelets 

 enclosed by the ovoid or spherical 

 ivory-like sheath of the subtending 

 bract, 7x12 mm. Apex of linear, 

 firm sterile spikelets projecting from 

 orifice of capsule. First glume of 

 fertile spikelet, n mm. long, orbic- 

 ular, apiculate, hyaline except apex 

 and margins which are tough membranaceous, n-i 3-nerved, the mar- 

 gins inflexed; second glume equal to first in length, broadly ovate, 

 apiculate, wing keeled, hyaline, with membranaceous apex and keel; 

 third glume similar with a faint midnerve; floral glume 9 mm., apicu- 

 late, 3-nerved; palea 7 mm., 2-nerved, delicately hyaline. Grain red- 

 dish brown, sub-globose, with a broad sulcus down the ventrum, 

 5x5.5 mm., in section ungulanotarate (hoof-print shape). 



Hab. Collected in the patio of Dr. Gaumer, Izamal, Jan. 13, 

 1895, Millspaugh Armour Exped. 73; "Izamal, one plant came up 

 spontaneously in my yard in 1894 and produced a quantity of seed; 

 this was followed in 1895 by several plants springing up in the same 

 place and producing a great quantity of seed, but none came up in 

 1896," Gaumer 1031. 



SACCHARUM L. Sp. PL Ed. 2, 1:79. 



Inflorescence a much branched panicle with an elongated main 

 axis. Spikelets i -flowered, in pairs at each joint of the articulate 

 rachis, i sessile, i pedicellate. Empty glumes indurated, with long 

 hairs at the base and on the callus, floral glume hyaline or wanting. 

 " Caryopsis oblonga" (Benth. & Hook. Gen. PI. 3:1125). Stamens 3. 



Saccharum officinarum L. Sp. PI. Ed. 2, 1:79. 



Panicle exserted, 30-60 cm. long, 15-25 cm. wide, axis terete, 



