UMBELLIFERAE (PARSNIP FAMILY) 361 



1. Pseudocymopterus montanus (Gray) C. & R. Rev. N. Am. Umbell. 74. 

 1888. Stem erect, slender, 3-6 dm. high, more or less leafy, glabrous except 

 at the base of the umbel or on the rays: the bipinnate leaves mostly with broad 

 outline; leaflets exceedingly variable, variously cut or entire: umbel 6-12- 

 rayed, with involucels of linear or setaceous bractlets longer than the yellow 

 flowers; rays 12-30 mm. long; pedicels about 2 mm. long: fruit broadly ob- 

 long, 4-5 mm. long, with lateral wings almost as broad as body, the dorsal 

 and intermediates very variable (either ribbed or narrowly winged) ; oil-tubes 

 1-4 in the intervals, 4-6 on the commissural side: seed much flattened. 

 Open mountain sides; Colorado to New Mexico and Arizona. 



2. Pseudocymopterus sylvaticus A. Nels. Bull. Torr. Bot. Club 28: 224. 

 1901. Similar but the stems more slender, the leaf-segments long-linear, the 

 fruiting peduncle elongated and naked: fruit broader and with thin, con- 

 spicuous, lateral wings as broad as the body; oil-tubes mostly 1 in the inter- 

 vals and 2-4 on the commissural sides. Wet woods and thickets; Wyoming 

 and Colorado. 



3. Pseudocymopterus tenuifolius (Gray) Rydb. Bull. Torr. Bot. Club 

 33: 147. 1906. Resembling P. montanus, but often larger and more branch- 

 ing, and the bipinnate leaves with very few and narrowly linear leaflets 1-4 

 cm. long. (P. montanus tenuifolius C. & R. Rev. N. Am. Umbell. 74. 1888.) 

 In mountain woods; Colorado to New Mexico. 



4. Pseudocymopterus multifidus Rydb. 1. c. Resembling P. montanus, 

 but low, about 2 .dm. high: lower leaves broadly rhombic in outline, thrice 

 pinnate; the upper twice pinnate; ultimate divisions linear: fruit smaller and 

 more rounded. High mountains; Colorado and New Mexico. 



5. Pseudocymopterus purpureus (C. & R.) Rydb. 1. c. Resembling P. 

 montanus, but short caulescent, with rather weak ascending peduncles 7.5-15 

 cm. long, and purple flowers. (P. montanus purpureus C. & R. 1. c.) Moist 

 places in the mountains; Colorado to New Mexico and Utah. 



6. Pseudocymopterus anisatus (Gray) C. & R. 1. c. Acaulescent, caespi- 

 tose from a much branched caudex, which is more or less covered with the 

 remains of old leaves: leaves on long petioles, narrow, somewhat rigid, pin- 

 nate, and the leaflets pinnately parted into linear (sometimes broader) 

 pungently acute segments: peduncles 1-3 dm. high, exceeding the leaves; 

 umbel unequally 5-12-rayed, with involucels of linear-subulate (sometimes 

 lobed) bractlets exceeding the white or yellow flowers; rays 1-7.5 cm. 

 long; pedicels 2-6 mm. long: fruit about 4 mm. long, the carpel irregularly 

 2-5-winged; oil-tubes 1-3 in the intervals, 2-4 on the commissural side: seed 

 face plane. Dry hills and mountains; throughout our range and to the 

 northwestward. 



7. Pseudocymopterus aletifolius Rydb. Bull. Torr. Bot. Club 31: 574. 

 1904. Densely caespitose, with the habit of P. anisatus: leaves once or twice 

 pinnate, stiff and shining, with petioles about as long as the blades; segments 

 obovate to rhombic-cuneate, deeply cleft into usually 3-toothed lobes: pe- 

 duncles 1-1.5 dm. high, about equaling the leaves; rays of the umbel very 

 unequal, in fruit 1-5 cm. long; pedicels also very unequal, 1-8 mm. long in 

 fruit; flowers yellow: fruit 5-6 mm. long; lateral wings evident but rather 

 narrow; dorsal ribs acute or slightly winged; oil-tubes usually solitary in the 

 intervals. In the mountains of Colorado, among rocks. 



8. Pseudocymopterus bipinnatus (Wats.) C. & R. 1. c. 75. Caespitose, the 

 short branches of the rootstock covered with the crowded remains of dead 

 leaves, glaucous, puberulent: leaves pinnate with few pairs of short segments, 

 which are pinnately divided into short linear lobes: peduncles 1-2 dm. high, 

 much exceeding the leaves; rays 2-8 mm. long; involucels of conspicuous 

 linear-lanceolate or broader bractlets, with hyaline margins, and more or less 

 united at base ; flowers white: fruit nearly sessile, ovoid, 3-4 mm. long, mod- 

 erately flattened dorsally, the 5 thickish carpel wings equal and narrow (often 

 being but very prominent acute ribs) ; oil-tubes 3-4 in the intervals, 6-8 on 

 the commissural side: seed face slightly concave. Western Wyoming to 

 Montana and Oregon. 



