Burke: Mirabilis nyctaginea vs. Mirabilis austrotexana

	Mirabilis nyctaginea	Mirabilis austrotexana
	four-o'clock, heartleaf umbrellawort four-o'clock
Habit	Herbaceous perennial from a fleshy root, erect or ascending, glabrous below and puberulent above, branching mostly above.
Leaves	Leaves opposite, the lower ones broadly deltoid or deltoid-ovate, rounded at the base and pointed at the tip, narrowed abruptly to petioles 5-20 mm. long, glabrous except for the marginal hairs, gradually reduced upward.
Flowers	Inflorescence usually a congested cyme on a peduncle; flowers usually 3 in a broadly bell-shaped involucre, which is 5-7 mm. long with broadly obtuse or rounded lobes; perianth with 5 flaring lobes, 1 cm. long, glabrous, pink or white; corolla none; stamens 3-5, exerted; style 1.
Fruits	Achene obovoid, 5 mm. long, wrinkled, strongly 5-ribbed.

	Mirabilis nyctaginea	Mirabilis austrotexana
Flowering time	June-August
Habitat	Disturbed areas of dry valleys and plains.
Distribution	Occurring east of the Cascades crest in Washington; British Columbia to Washington, east to Motana; native to central and eastern North America. [WildflowerSearch map] [BONAP county map]	[BONAP county map]
Origin	Introduced from east of the Rocky Mountains
Conservation status	Not of concern
Sibling taxa		M. nyctaginea
Web links	Local floras: BC, CA, WA Local Web sites: CalFlora, CalPhotos, Flora NW, PNW Herbaria WildflowerSearch iNaturalist (observations) USDA Plants Database LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search	Local Web sites: Flora NW, PNW Herbaria WildflowerSearch iNaturalist (observations) USDA Plants Database LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search

Mirabilis nyctaginea

Mirabilis austrotexana

four-o'clock, heartleaf umbrellawort four-o'clock

Habit

Herbaceous perennial from a fleshy root, erect or ascending, glabrous below and puberulent above, branching mostly above.

Leaves

Leaves opposite, the lower ones broadly deltoid or deltoid-ovate, rounded at the base and pointed at the tip, narrowed abruptly to petioles 5-20 mm. long, glabrous except for the marginal hairs, gradually reduced upward.

Flowers

Inflorescence usually a congested cyme on a peduncle;

flowers usually 3 in a broadly bell-shaped involucre, which is 5-7 mm. long with broadly obtuse or rounded lobes;

perianth with 5 flaring lobes, 1 cm. long, glabrous, pink or white;

corolla none;

stamens 3-5, exerted;

style 1.

Fruits

Achene obovoid, 5 mm. long, wrinkled, strongly 5-ribbed.