Croton glandulosus L.

Sand Croton

Croton_glandulosus_plant.jpg
STATS

Native
CC = 1
CW = 5
MOC = 55

© DETenaglia

Family - Euphorbiaceae

Stems - Herbaceous, erect, single from the base, from a taproot, branching in apical 1/2, stellate pubescent, to +/-30cm tall.

Leaves - Alternate, petiolate, stipulate. Stipules green, needlelike, fugacious, to 1.3mm long, possibly tipped by a small gland. Petioles stellate pubescent, with a shallow adaxial groove, to 2cm long. Blades to 5cm long, 2.5cm broad, lanceolate to lance-ovate, stellate pubescent (much more so abaxially), dull green adaxially, light green abaxially, serrate, blunt at the apex.

Croton_glandulosus_pressed_leaves.jpg Pressed leaves.

© DETenaglia

Croton_glandulosus_glands.jpg Arrows show glands at the base of the leaf blade.

© DETenaglia

Inflorescence - Terminal, compact, androgynous racemes to 1.5cm tall(long). Peduncle densely stellate pubescent. Satminate flowers - Pedicel stellate pubescent, 1.2mm long, each flower subtended by a small needlelike bract. Bracts to 1mm long. Numerous glands present at the base of each pedicel. Pistillate flowers - Pedicel to .1 or .2mm long.

Croton_glandulosus_inflorescence.jpg Inflorescence.

© DETenaglia

Flowers - Staminate flowers - Petals 5, all white, stellate pubescent, slightly exceeding the sepals, oblong-lanceolate. Stamens 10. Filaments white, glabrous, to 1.5mm long. Anthers pale yellow, .4mm broad. Sepals 5, ovate, to 1.2mm long, white, stellate pubescent. Pistillate flowers - Sepals 5, greenish, stellate pubescent externally (branches of the pubescence long and thin), glabrous internally, +/-2mm long in flower, accrescent, oblanceolate to spatulate. Ovary stellate pubescent, green, superior, 1mm long in flower, 3-locular (one seed per locule). Placentation axile. Styles 3, divided nearly to the base and appearing as 6, white, papillate, 2.2mm long.

Croton_glandulosus_staminate_flowers.jpg Staminate flowers.

© DETenaglia

Croton_glandulosus_styles.jpg Arrow shows styles.

© DETenaglia

Croton_glandulosus_capsule.jpg Developing capsule.

© DETenaglia

Flowering - July - October.

Habitat - Prairies, open woods, waste ground, pastures, glades, roadsides, railroads.

Origin - Native to U.S.

Other info. - This species is found throughout most of Missouri but seems to be absent from the north-central portion of the state. This species is easy to ID because of its toothed leaves. No other wild species of Croton in Missouri has toothed leaves. The species epithet comes from the fact that the leaves typically have two glands at the base of each leaf blade.

Photographs taken at the Current River Conservation Area, Reynolds County, MO., 8-10-01, and in Daytona Beach, FL., 7-1-02.