558 MALVACEAE 



2. CALLIRRHOE Nutt. POPPY MALLOW. 



Perennial herbs, with thick, farinaceous roots. Leaves alternate, with lobed 

 or cleft blades or the upper stem-leaves palmately or pedately dissected. Flow- 

 ers solitary, axillary, or sometimes in terminal racemes, subtended by 1-3 bract- 

 lets. Sepals 5, united below. Petals 5, crimson to white, cuneate at the base, 

 or fan-shaped. Carpels 10-20, 1-celled, 1-seeded, beaked. Seeds ascending; 

 embryo curved. 



1. C. involucrata (T. & G.) A. Gray. Cespitose perennial, with a napiform 

 thick root; stems procumbent, more or less hirsute; leaf -blades rounded in out- 

 line, palmately or pedately 5-7-parted, the cuneate divisions deeply cleft into 

 lanceolate or oblong lobes; peduncles surpassing the leaves; calyx subtended by 

 3 linear or oblong bractlets half as long as the lanceolate calyx-lobes; petals 

 crimson or purple, 2-3 cm. long. Plains: Minn. Mo. Tex. Utah Wyo. 

 Plain. Je-Au. 



3. SIDALCEA A. Gray. WILD HOLLYHOCK, FALSE MALLOW, 



ROSE MALLOW. 



Erect perennial (ours) or annual herbs, with palmately or digitately lobed or 

 cleft leaf-blades. Flowers in terminal spikes or racemes, purple, or pink, or 

 yellowish white, occasionally polygamous by the abortion of the stamens in 

 some flowers, without bractlets. Sepals 5, united below. Petals 5, emarginate 

 or truncate. Stamens in two more or less distinct series, the outer of 5 phalanges, 

 each of 4-10 stamens, the inner of 10 phalanges of 2 stamens. Carpels 5-9, at 

 maturity separating from the axis, beakless or apiculate. 



Corolla yellowish white; plant with a creeping rootstock; leaves glabrous. 



1. S. Candida. 



Corolla pink, rose-colored, or lilac, rarely white; plants with a woody base; leaves pubes- 

 cent. 



Pubescence, especially that of the calyx and stem, stellate, without any longer hairs. 

 Petals about 10 mm. long; carpels smooth. 2. S. oregana. 



Petals 15-20 mm. long; carpels reticulate on the back. 3. S. nervata. 



Pubescence of the calyx and the stem at least with some scattered long hairs. 

 Calyx-lobes lanceolate; stem mostly single, erect. 



Calyx stellate, with longer hairs on the margins; carpels puberulent, reticulate 



on the back. 4. S. campestris. 



Calyx hirsute, with branched hairs; carpels smooth and glabrous. 



5. S. neomexicana. 



Calyx-lobes ovate, glandular-puberulent and with a few scattered long hairs; 

 stems usually several, decumbent at the base. 6. S. crenulata. 



1. S. Candida A. Gray. Stem glabrous and shining, 5-10 dm. high; blades 

 of the basal leaves rounded, 5-9-lobed, and crenate, 4-10 cm. broad, those of the 

 upper stem-leaves still larger, sometimes almost 2 dm. in diameter, cleft into 

 lanceolate divisions; calyx minutely stellate, about 7 mm. long; lobes ovate, acute; 

 petals 15-20 mm. long; carpels smooth, nearly glabrous. Along streams and in 

 wet meadows: Wyo. N.M. Utah. Submont. Subalp. Jl-S. 



2. S. oregana (Nutt.) A. Gray. Stem 6-15 dm. high; basal leaf-blades 

 rounded-reniform, 7-9-cleft, with crenate or lobed divisions, 4-10 cm. wide; 

 uppermost stem-leaves divided into linear divisions; inflorescence spiciform; 

 calyx about 6 mm. long; lobes triangular-ovate, abruptly short-acuminate; 

 petals lilac or rose. S. digitata A. Nels. Open places: Wash. Ida. n Calif. 

 My-Au. 



3. S. nervata A. Nels. Stems usually single; leaf-blades sparingly pubes- 

 cent, with short branched hairs above, minutely stellate beneath, those of the 

 basal leaves orbicutar-reniform, 4-8 cm. broad, usually 5-9-lobed, sometimes 

 obscurely so, each lobe with 2-3 broad teeth, those of the upper stem-leaves 

 deeply cleft into cuneate, lobed divisions; calyx 6-7 mm. long; lobes triangular- 

 lanceolate, acute; petals rose-colored. Hills and mountain valleys: Wyo. 

 Utah Ida. Submont. Je-Jl. 



4. S. campestris Greene. Stem 3-10 dm. high; leaf -blades rather coarsely 

 pubescent, with branched or stellate hairs; those of the basal leaves orbicular- 

 reniform, about 9-lobed, the lobes 3-5-toothed, those of the upper stem-leaves 



