STANDLEY—ALLIONIACEAE OF THE UNITED STATES, 327 
Exploring Exped.; Walla Wall , 1903, J. 8S. Cotton 1058; Kiona, 1902, 
Cotton 724; Craigs Ferry, Kittitas County, 19038, Cotton; Washington, 
1883, Canby 1057, 
Orecon: Near The Dalles, 1881, //oiwell, 
ABRONIA TURBINATA MARGINATA Eastwood, Proc, Cal, Acad. IT. 6:315. I have 
not been able to determine this from the description, nor have I succeeded in 
seeing the type collection, which consisted of only a single specimen, 
2. TRIPTEROCALYX Hook. 
Tripterocalys Hook, Kew Journ, Bot. 5: 261. 1805. 
Abronia § Tripterocalye Torr, Frem, First a 92, 1845. 
Cycloptera Nutt.; A. Gray, Am. Journ, Sci. / 152319. 1858, not Jendl. Knehir 
115, 1S41. 
Apaloptera Nutt.; A. Gray, loc. cit. 
Abronia of various authors, in part. 
Stout, much branched annuals, usually more or less pubescent, the pubescence 
consisting of flattened, several-celled hairs: stems erect, ascending, or rarely 
procumbent; leaves opposite, entire, usually unequal; involucral bracts 4 to G, 
separate, folded over the flowers in the bud; perianth with a long slender tube 
and a broad, expanded, 5-lobed limb: flowers in the involucre numerous; sta- 
mens 5, with very short filaments, attached at irregular intervals to the upper 
part of the tube of the perianth ; fruit almost orbicular in outline, with a cori- 
neeous or spongious body, this often ribbed and completely surrounded by the 
© to 4 broad wings, which are thin and strongly reticulate-veined ; stipe pro- 
longed below through the membranous wings; seeds narrowly elliptical, cylin- 
drical. 
Type species, Abronia micrantha Torr. This is also the type of the genera 
Cyeloptera and Apaloptera 
This genus is well worthy of sepa ‘ation from the true Abronias because of 
its peculiar fruit, whose wings completely surround the body. The central 
cavity, moreover, does not extend into the wings as it does in all or most 
species of Abronia. The plants are so different in general appearance, habit. 
and especially in the appearance of the heads of the fruit, that no one can have 
any difficulty in distinguishing the two genera at a glance, The two are 
sharply defined, there being no intergradient forms. 
KEY TO THE SPECIES. 
Body of the fruit between the wings transversely wrinkled 
or ribbed, the ribs extending into the wings_ 
sody of the fruit not transversely wrinkled, but frequently 
with vertical ribs between the wings. 
Flowers 2 cm. long or less. 
Body of the fruit spongious, without vertical ribs: 
stems pubescent; peduncles shorter than the 
lenves 90 - eee 2. OT. inicranthits, 
3ody of the fruit scarcely spongious, frequently 
with longitudinal ribs between the wings; stems 
glabrous; peduncles as long as the leaves or 
T. criur-nveltae, 
oa] 
longer 6 ee --------------- 2 8 7. peduncilatus, 
Flowers more than 2 cm. long, usually almost 8 cm. 
Fruit 20 to 28 mm. long: flowers bright pink; plant 
stout: stems sparingly pubescent; bracts lar- 
rowly ovate ___--_.--------------------------- 4. T. cyclopterus. 
