302 FlI.I.l) Coi.UMIilAN MlsKUM — BoiANN, Voi.. I. 



BURSERACE^. 



Bursera graveolens Tri. & Planch. Nabanche. 



Tree 50 feet high, common in cultivation at Izamal, May (^(juj. 



MELIACE^. 

 Cf.dkki.a ^dorata Linn. Ccdro. Kulche. 



Tree 80 to 125 feet high, abundant everywhere on the peninsula. 

 Izamal, July (749). 



Mki.ia A/ederach Linn. Parais,'. 



Tree 60 feet high, common in cultivation at Izamal, May to 

 June (5S3). 



TkicHiiJA TERMiNAi.is Jacq. Choben-che. 



Tree 60 feet, abundant in forests about Izamal (335). 



EUPHORBIACE/E. 



Acalypha mollis Kunth. 



Shrubb}', 8 feet high. Common in the forests about Izamal,. 

 March to April (477). 



Acalypha setosa A. Rich. 



Herb 8 to 20 inches high; very abundant in old fields near 

 Izamal (493). 



Acalypha unibracteata Miill. Chilibtux. 



Shrubby, 10 feet high, very abundant in the brush lands about 

 Izamal (56H). 



The virgate branches are used by the Indians in the construc- 

 tion of bird cages and traps. 



Argithamnia tinctoria sp. nov. (Plate XIV.) 



Shrubby, 4 feit high, stems one or few, ligneous, smooth be- 

 low, branching and appressed hairy above. Leaves ovate-lance- 

 olate, acute at both ends, entire or with a few scattered indistinct 



, gland-like teeth, three ribbed, the middle prominently veined, 



older leaves smooth above, all densely pilose below; 1.5 to 3 

 inches long, .75 to 1.5 inches broad, petiole very short, .12 to 

 .25 inch long, stipules cornuate-apiculate .12 inch long. In- 

 florescence in short, densely flowered racemes, mona;cious, twice 

 to thrice shorter than the leaves. Female flowers : calyx lobes 

 pilose, ovate-lanceolate narrowed at the base, pointed and 

 keeled, the pedicels i-bracted at the middle, styles dilated above, 

 stigma bipartite spreading, glands small conduplicate, fruit 

 densely pilose, seeds deep-rose color, densely honeycombed by 

 strong reticulations. Male flowers ha:iry throughout, calyx lobes 

 ovate pointed, petals orbiculate entire, glands free above, spatu- j 

 late, glabrous. 



This plant agrees with a specimen in Herb. Gray. Harvard, 

 collected by C. Wright in Nicaragua, labeled A. Sifobiculata sp. 

 nov., C.W. The glands and seeds, when boiled, emit a beautiful 

 rose-pink dye. Common about Xcholac, March (426). 



