Contributions to Western Botany. 47 
cylindric, about 3’’ long, filling the entire cavity; whole 
plant smooth, or rarely glutinous, short-hairy abore. 
2A2BC. Stipe of fruit short; wing rounded to emarginate at 
apex and with a double network, the primary meshes 
being filled with many fine and much-branched Lines; pe- 
duncles scarcely exceeding the leaves, often short. 
14. A. micrantha (Torr. Frem. Rep. 96) Choisy DC. Prod. 
13 2 436. Has the fine double network throughout the wing, 
and ribs not conspicuously raised nor winged, nearly straight; 
wings rounded or rarely emarginate at’ tip; flowers in the type 
smill and greenish and peduncle shorter than the petiole. 
Grows in the Navajo Basin, also on the plains of southern Wyo- 
ming and Colorado; Juniper Zone. It is difficult to separate this 
from A. eycloptera. 
15. Var. pedunculata Jones Cont. 7 716. Flowers often 
large and pinkish, peduncle longer than the leaves or as long; 
bracts broader. Navajo Basin of eastern Utah. 
16. A, Crux-Maltae Kell. Proc, Cal, Acad. 2 71, This has 
the fine double network around the edge of wing only, outline of 
wings oblate, emarginate; ribs raised into very stout transverse 
wings or rays at the base, making the body of the fruit look like 
the burrs or Xanthium spinosum orCenchrus. These rays extend 
even to the meshes of the wings; flowers large, red, very fragrant; 
bracts acute; leaves elliptical-oblong, mostly acute; peduncles 
slender; found only in the Juniper Zone of western Nevada and 
Oregon. 
242B2C. Wings without a double network throughout, not 
emarginate nor rounded at the apex, often acute; stipe of 
fruit long, peduncles elongated. 
17. A. cycloptera Gray Am. Jour. Sci. 2 15 319. Flowers 
large, red; main ribs of wing bent at least at base, not raised 
into transverse flat rays, but arising from spongy bases. Grows 
in the Juniper Zone of eastern Colorado, New Mexico, Green 
