. An illustrated flora of the northern United States, Canada and the British possessions : from Newfoundland to the parallel of the southern boundary of Virginia and from the Atlantic Ocean westward to the 102nd meridian. Botany. 644 AMMIACEAE. Musineon Hookeri (Nutt.) T. & G. differs in being scabrous. It inhabits the Rocky Mountain region, ranging eastward into South Dakota and western Musineon tenuifolium Xutt. Fig- 3144- Scapose Musineon. Husenium tenuifolU Adorium tciuiifolin, n Nutt.; T. & G. Fl. N. A. i: 642. 1840 Kuntze, Rev. Gen. PI. 264. 1891. Acaulescent from a wo
. An illustrated flora of the northern United States, Canada and the British possessions : from Newfoundland to the parallel of the southern boundary of Virginia and from the Atlantic Ocean westward to the 102nd meridian. Botany. 644 AMMIACEAE. Musineon Hookeri (Nutt.) T. & G. differs in being scabrous. It inhabits the Rocky Mountain region, ranging eastward into South Dakota and western Musineon tenuifolium Xutt. Fig- 3144- Scapose Musineon. Husenium tenuifolU Adorium tciuiifolin, n Nutt.; T. & G. Fl. N. A. i: 642. 1840 Kuntze, Rev. Gen. PI. 264. 1891. Acaulescent from a woody root, tufted, glabrous, 2'-6' high, pale and somewhat glaucous. Leaves petioled, decom- pound into linear acute incised segments; scape equalling or slightly exceeding the leaves; umbel i'-i' broad, S-i8-rayed; rays a'-s" long; flowers greenish white (?); pedicels *"-2" long in fruit; fruit oblong, nearly smooth, about l" long and i" thick, its ribs rather prominent when dry. In dry rocky places, South Dakota, Nebraska, and in the Rocky Mountains. June-July. 29. CYMOPTERUS Raf. Journ. Phys. 89: 100. 1819. Perennial subscapose glabrous herbs, with tliick roots-, pinnately decompound leaves, and white flowers (in our species) in peduncled umbels. Involucre of several bracts or none. Involucels of I to luimerous bracts. rather prominent. Petals inflexed at the apex. Stylopodium depressed. Fruit globose, ovoid or ellipsoid, flattened laterally or not at all. Carpels dorsally flattened, with 3-5 flat equal wings: oil-tubes several or solitary in the intervals, few or several on the coinmissural side. [Greek, wave-winged, referring to the fruit.] About 13 species, natives of western and central North America, the following typical. I. Cjmiopterus acaulis (Pursh) Rydberg. Plains Cymopterus. Selinum acaule Pursh, Fl. Am. Sept. 732. 1814. Cymopterus glomcralus Raf. Journ. Phys. 8g : 100. 1819. Cviiiol^lcnis acaulis Rydberg. Bot. Surv. Neb. 3: 38
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