Callirhoe involucrata (T. & G.) A. Gray
Family - Malvaceae
Stems - Procumbent to ascending or sprawling, hirsute and with stellate hairs, scabrous, herbaceous, to +80cm long, purplish below, green above, from a taproot.
Leaves - Alternate, petiolate, stipulate. Stipules auriculate, clasping, to 2cm long, 2cm broad, ovate or lanceolate, glabrous, with ciliate margins. Petioles to +10cm long, reduced upward, hirsute and stellate pubescent, strigose, weakly 3-sided. Blade palmately 3-5-lobed, to +/-15cm broad. Lobes often divided again. Ultimate divisions entire, acute, strigose above and below with some stellate pubescence below.
Inflorescence - Single axillary flowers on long(+15cm) peduncles. Peduncles hirsute, strigose. Flowers closely subtended by 3 linear-oblong bracts. Bracts ciliate-margined, +/-2cm long, with involute margins, not distinctly separated from calyx.
Flowers - Corolla +6cm in diameter. Petals 5, deep rose-pink with white at very base, free for most of length but united to stamen column, +3cm long, +2cm broad, glabrous, blunt to emarginate at apex. Stamen column 1.3cm tall(long). Filaments deep rose-pink. Anthers pale yellow. Styles 1cm long, deep rose-pink, at first hidden by stamen column. Ovary of 15-20 carpels in a ring to 5mm in diameter. Calyx deeply 5-lobed. Tube to 3mm long. Lobes to -2cm long, lanceolate but involute in upper half, with prominent white venation, hirsute to pilose, greenish near apex, purplish-green near base, ciliate-margined, tomentose internally near base. Fruit ring to 10mm broad, 1 seed per carpel.
Calyx and subtending bracts.
Flowering - March - August.
Habitat - Prairies, open woods, roadsides, railroads.
Origin - Native to U.S.
Other info. - This is a striking
plant with bright flowers which only last a day and then dry to a more
purple color. It is gaining popularity in cultivation and is easy to grow.
Photographs taken in the Ozark Scenic Riverways, Shannon County, MO., 7-8-03.