Taxon	Illustrator ⠉
	Cienfuegosia yucatanensis Eremalche rotundifolia Eremalche parryi subsp. parryi Callirhoe involucrata var. involucrata Callirhoe leiocarpa	Linny Heagy Linny Heagy Linny Heagy

Herbs, annual, sometimes gynodioecious. Stems prostrate to erect, sparsely to densely hairy. Leaves: stipules caducous, subulate; blade reniform-round, unlobed or palmately 3-, 5-, [7-] cleft, base truncate to cordate, margins usually toothed, sometimes entire. Inflorescences axillary, solitary flowers in lower axils, congested and ± corymbose at branch tips; involucellar bractlets persistent, 3, distinct. Flowers: calyx not accrescent, not inflated, lobed to beyond middle, lobes not ribbed, acuminate; corolla campanulate, white to rose, lavender, or mauve, drying purple or blue; staminal column included; ovary 9–36-carpellate; ovules 1 per carpel; styles 9–36-branched (branches equal in number to carpels); stigmas terminal, capitate. Fruits schizocarps, oblique, not inflated, depressed-discoid, edge corrugate or reticulate, glabrous; mericarps 9–36, drying black, 1-celled, without spur, ± spheric, unarmed, lateral walls ± disintegrated, indehiscent. Seeds ascending, 1 per mericarp, black, obovoid-reniform, glabrous. x = 10.

Distribution

sw United States, nw Mexico

Discussion

Species 3 (3 in the flora).

Selected References

None.

Lower Taxa

Eremalche exilis, Eremalche parryi, Eremalche rotundifolia

Key

1	Leaf blades unlobed; petals magenta-spotted at base; mericarps 2.8–3.5 mm.	Eremalche rotundifolia
1	Leaves lobed or parted; petals not spotted; mericarps 1.4–1.8 mm	> 2
2	Flowers bisexual; petals 4–5.5 mm, ± equaling calyx; plants prostrate to decumbent.	Eremalche exilis
2	Flowers bisexual or pistillate; petals 5.5–20(–25) mm, equaling or exceeding calyx; plants erect, main stem unbranched or with ascending branches from base.	Eremalche parryi