642 GRIGGS : SPECIES OF HELICONIA 
Senaju. From there trips were made northeastward to Cahabon 
and in a more easterly direction up the valley of the Oxec, a good- 
sized creek emptying into the Cahabon river ten miles below the town. 
In addition, the most abundant species at least were collected along 
the road from Panzos to Sepacuité: We were informed that the 
- region had never been visited by a botanist, the nearest that one had 
been being Senaju, where Captain John Donnell Smith made a short 
stop. The mountains about Sepacuité, which is about 3,000 feet 
above sea-level, are heavily forested and in nearly their primeval 
condition. Here one species, //. Zortuosa, is very abundant. Few 
of the species, however, are forest plants. Around the old Indian 
town of Cahabon the country has been reduced to an almost tree- 
less, grass-grown desert, and on the edges of this desert where the 
woods are not very thick and yet the water-supply is sufficient, 
most of the species were found. Along the road from Panzos to 
Sepacuité much the same conditions prevail as around Cahabon. 
We wish to express our thanks to the owners of Sepacuite, to 
Mrs. Owen especially, and to Mr. Alfred Rock, of Setzimaj, for their 
kind hospitality and for the very great assistance they so eagerly 
offered us, without which it would have been impossible to make 
our collections. I am very grateful to Mr. John Donnell Smith, 
of Baltimore, for the loan of all of his material on the genus, and 
to Dr. W. A. Kellerman, of the Ohio State University, for valuable 
criticism and suggestions. Thanks are also extended to the officers 
of the National Herbarium for the loan of specimens. 
The references after the descriptions, ¢. g., ‘0. 258,’ are to 
the collectors’ numbers accompanying the sheets. Except where 
otherwise stated, all the plants are from a collection made by Mr. 
O. F. Cook and myself during March and April, 1902. This col- 
lection was made for the United States Department of Agriculture 
and is deposited in the herbarium of the department in the National 
Museum. The numbers of photographs cited are either serial or 
field numbers of the collection in the Office of Tropical Agricul- 
ture of the Department. 
Key to the Groups and Species Discussed in this Papert 
I. Leaves borne at intervals along an elongated stem, #, ¢., with the habit of a Zingte”’ 
mostly small (//, psittacorum). Subgenus STENOCHLAMYS Baker. 
A. Leaves narrowly oblong, sessile, almost clasping the stem ; peduncle short oF 
absent ; branch-bracts red, narrow. H. Choconiana Wats- 
