Hypoxis hirsuta (L.) Coville - Yellow-Eyed Grass

Hypoxis hirsuta plant

Family - Amaryllidaceae

Stems - Flowering stems to +10cm tall, herbaceous, typically hirsute but sometimes less so, +/-1mm in diameter, from a corm.

Leaves - Basal, linear, to +15cm long, +3mm broad, pubescent.

Inflorescence - 1-6 flowers terminating the aerial stems, in a crude umbel. Pedicels to +2cm long, pubescent, sometimes subtended by small linear bracts.

Hypoxis hirsuta inflorescence

Flowers - Tepals 6, spreading, entire, -1cm long, 2-3mm broad, oblong, glabrous internally. Outer tepals pubescent and greenish-yellow externally. Stamens 6, adnate at apex of ovary. Filaments glabrous, 2-3mm long. Anthers orange, 2.1mm long, sagittate. Style 1.5mm long, glabrous. Ovary inferior, 3-locular. Ovules tuberculate, keeled.

Hypoxis hirsuta flowerFlower close-up.

HYpoxis hirsuta tepalsUnderside of tepals.

Flowering - April - May.

Habitat - Prairies, glades, bluffs, dry woods, fields.

Origin - Native to U.S.

Other info. - This little species is common in Missouri and easily seen growing in fields even though it is quite small. The small yellow flowers open in the morning and typically wilt in hot sun. The amount of pubescence on this species can be variable.

Photographs taken at the Piney Creek Wilderness, Mark Twain National Forest, Barry County, MO., 4-9-01, at Earthquake Hollow, Callaway County, MO., 4-22-04, and at Bibb County Glades, Bibb County, AL., 5-1-05.