100 NOTES ON HUMIRIACES. 
IL Humrrium, Mart. (a Houmiri, Aubl. mutatum). 
Flores parvi. Filamenta 20, basi connata, omnia integra et unianthe- 
rifera, vel 5 majora, petalis alterna apice tridentata et triantherifera. 
Discus 10-lobus v. 10-partitus, lobis seepius emarginatis bidentatisve. 
Ocula in loculis solitaria v. gemina, superposita, dissepimentis spuriis 
transversis sepius separata. Cymæ pedunculate v. subsessiles, axil- 
lares v. laterales, rarius terminales. 
§ 1. Zilamentis omnibus integris uniantheriferis.—Ovarii loculi nunc 
biovulati transversim septati, nunc uniovulati. 
1. H. crassifolium (Mart. Nov. Gen. et Sp. vol. ii. p. 143. t. 198); foliis 
amplis obovatis integerrimis crassis ramisque glabris, petiolo alato, 
eymis subterminalibus latis floribundis, petalis dorso puberulis, ovarii 
loculis biovulatis.— Folia 5—8 poll. longa, 4—5 poll. lata, obtuso-emar- 
ginata. Petala 2 lin. longa 
In the Serra de Arara Coarà, on the river Japurà, in Western Brazil, 
on the confines of Peru (Martius). A remarkable species from the size 
of its leaves, only known to me from Martius's detailed description and 
figure. 
2. H. Guianense (Benth. in Lond. Journ. Bot. nbi ii. p. 374); puberulum 
v. glabratum, foliis ovatis obovatisve obtusis, petiolo distincto alato, 
cymis longe peduneulatis, petalis subglabris, antheris barbatis, ovarii 
loculis biovulatis.—H. Surinamense, Miq. Stirp. Surin. p. 86. t. 24. 
Apparently frequent in British Guiana (Schomburgk, Ist coll. n. 270) 
and Surinam (Hostmann, n. 793, Focke, ete.). Very near to H. flori- 
bundum, but the leaf-stalk is always much longer, the shape of the leaf 
rather different, and there is generally more or less of pubescence about 
the inflorescence and flowers. These, as in H. floribundum, are white 
and about 2 lines long. The fruit is also like that of H. floribundum, 
but rather smaller. 
$ H floribundum (Mart. Nov. sn. et Sp. vol. ii. p. 145. t. 199); gla- 
.. brum v. parcissime puberulum, foliis obovatis obtusis retusisve in 
petiolum brevissimum angustatis sessilibusve, cymis longe peduncula- 
tis, petalis glabris, antheris barbatis, ovarii loculis biovulatis.—H. 
parvifolium, A. Juss. in St, Hil. Fl. Bras. Merid. vol. ii. p. 89. 
Common in Brazil. The larger form, with leaves 2-3 inches long 
and 1-2 wide, has been gathered by Spruce in various places along 
the Amazon and Rio Negro; the smallest, with leaves scarcely one 
