Perideridia parishii (Coult. & Rose) A. Nels. & J.F. Macbr.  
Family: Apiaceae
Parish's yampah,  more...
[Pimpinella parishii ]
Perideridia parishii image
Max Licher  
Plant: Perennial, glabrous, 1.5-9 dm, green; roots tuberous, single, 1-2.5 cm, fusiform; stem erect, branched Leaves: basal petiole 3-10 cm; basal blade 10-20 cm, ± ovate, generally 1-ternate or 1-pinnate with 1-3 pairs of leaflets, leaflets 3-15 cm, ± lanceolate, entire; cauline leaves 1-ternate INFLORESCENCE: compound umbels; peduncle 3-20 cm; bracts 0-2, bristle-like; bractlets 3-8, 2-4 mm, linear-lanceolate, scarious-margined; rays 5-20, 1-4.5 cm, subequal or unequal, ascending or spreading-ascending; pedicels 3-4 mm; secondary umbels 13-27-flowered Flowers: small, many; calyx lobes evident; petals generally obovate, free, white, tips narrowed, 1-veined; stamens 5; pistil 1, ovary inferior, 2-chambered, generally with a ± conic, persistent projection or platform on top subtending 2 free styles; styles 1-1.5 mm Fruit: 2 dry, 1-seeded halves that separate from each other but generally remain attached for some time to a central axis, 2.5-5 mm wide, oblong to ± round, slightly compressed side-to-side or not at all, glabrous; ribs subequal, thread-like, not winged; oil tubes per rib-interval 3-4; fruit axis divided to base; Seed: face flat to grooved Misc: Moist meadows, open coniferous forests; 2000-3000 m.
General: Perennial, 20-80 cm tall; stem slender and solitary, attached below ground level to one or more tuberous roots. Leaves: Basal and cauline, alternate, compound, ovate to lanceolate in outline, 5-20 cm long, mostly ternate (sometimes pinnate below); leaflets linear to narrowly lanceolate, 2-10 cm long, margins entire; petioles 3-10 cm long. Flowers: Inflorescence of 4 or more terminal and axillary compound umbels per stem, with 5-20 unequal rays each 1-7 cm long; involucre absent, pedicels 3-10 mm long, subtending bractlets absent; calyx toothed; petals white; stamens white; stylopodium conic, styles generally less than 1 mm long; flowers July-August. Fruits: Schizocarp, ovoid to oblong, 3-7 mm long, flattened dorsally, glabrous, lateral wings broad, dorsal wings variously broad to nearly absent. Ecology: Moist meadows, open forests, mostly in ponderosa pine; 1800-3000 m (6500-10000 ft); Apache, Coconino, and Navajo counties; southwestern U.S. Notes: Our specimens, as here described, belong to ssp. parishii. Perideridia gairdneri (Gardner's yampah), which occupies approximately the same range, is distinguished primarily by its pinnate leaves and fruits about as long as wide (vs. longer than wide in P. parishii). Perideridia parishii is a host plant for the anise swallowtail butterfly. Editor: Springer et al. 2008
Perideridia parishii image
Max Licher  
Perideridia parishii image
Max Licher  
Perideridia parishii image
Perideridia parishii image
Perideridia parishii image
Perideridia parishii image
Perideridia parishii image
Perideridia parishii image
Perideridia parishii image
Perideridia parishii image
Perideridia parishii image
Perideridia parishii image
Perideridia parishii image
Perideridia parishii image
Perideridia parishii image
Perideridia parishii image
Perideridia parishii image
Perideridia parishii image
Perideridia parishii image
Perideridia parishii image
Perideridia parishii image
Perideridia parishii image
Perideridia parishii image
Perideridia parishii image
Perideridia parishii image
Perideridia parishii image
Perideridia parishii image
Perideridia parishii image
Perideridia parishii image
Perideridia parishii image
Perideridia parishii image
Perideridia parishii image
Perideridia parishii image
Perideridia parishii image
Perideridia parishii image
Perideridia parishii image
Perideridia parishii image
Perideridia parishii image
Perideridia parishii image
Perideridia parishii image
Perideridia parishii image
Perideridia parishii image
Perideridia parishii image