102 CONTRIBUTIONS FROM THE NATIONAL ‘HERBARIUM. 
Minnesora: Fort Snelling, Mearns, August, 1891 and 1896; Acton, Meeker 
County, Frost, June, 1892; Winona, flolzinger, June, 1890. 
lowa: Fayette County, Mink, June 5, 1894. 
Missourt: Near St. Louis, Drummond, in 1832; Jackson County, Bush 341, June 
14, 1896. 
ARKANSAS: Fort Smith, Bigelow, in 1853-54. 
Kansas: Lawrence, Stevens. 
Nesraska: Newcastle, Clements, June 21, 1893, 
Sourn Dakota: Brookings County, Williams, September 21, 1893. 
27. TAENIOPLEURUM ©. & R. Bot. Gaz. 14: 283. 1889. 
Calyx teeth prominent. Fruit flattened laterally, oblong, glabrous. 
Carpel with broad salient ribs, each tipped with a large group of 
strengthening cells. — Stylopo- 
dium prominent and conical. 
Oil tubes very large, solitary in 
the intervals, 2 on the commis- 
sural side, and a small accessory 
ASS one beneath each group. of 
{ | strengthening cells. Seed dor- 
h sally flattened, sulcate beneath 
the oil tubes, becoming loose in 
the pericarp and invested by a 
layer of secreting cells, the face 
plane or somewhat concave. 
Smooth erect herbs, from a fascicle of thickened fibers, with ternate- 
pinnate leaves, toothed (usually broad) leaflets, involucre and involu- 
cels of numerous conspicuous bracts, and white flowers. 
A monotypic genus (based on Carum howellii C. & R.) belonging 
to Oregon and California. 
1. Taeniopleurum howellii C. & R. Bot. Gaz. 14: 284. 1889. Fia. 26. 
Carum howellii C. & R. Rev. N. Am. Umbell. 129. 1888. 
Ataenia howellii Greene, Pittonia 1: 274. 1889. 
Fic. 26.—Taeniopleurum howellii: a,b, ~ 10. 
Stem rather stout, 9 to 12 dm. high; leaves few, ternate then once 
or twice pinnate; leaflets lanceolate to ovate, strongly toothed or 
lobed; umbels many-rayed, with involucre of long narrowly oblanceo- 
late bracts (becoming reflexed), and involucels of prominent lanceolate 
scarious-margined bractlets; rays 8 to Tem. long; pedicels 6 to 10 mm. 
long: fruit 3 to 4 mm. long. 
Type locality, wet places, ‘* Grant’s Pass,” Josephine County, Oreg. ; 
collected by //owell, no. T10, July 18, 1887; type in Herb. Coulter, 
duplicate in U. S. Nat. Herb. 
From southern Oregon to Mendocino and Mariposa counties, Cal. 
Specimens examined: 
OREGON: Type specimens, as cited under type locality. 
Cairornia: Near Mariposa, Mariposa County, Congdon, September—October, 
1892; Round Valley, Mendocino County, Chesnut, June, 1898. 
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