Berlandiera texana DC.

Berlandiera texana plant

Family - Asteraceae

Stems - To +2m tall, erect, multiple from the base, from a taproot and woody crown, herbaceous, terete, branching near the apex, with dense reddish-purple pubescence. The hairs multicellular.

Berlandiera texana stem

Leaves - Alternate, the lowest petiolate. Petioles to +/-10cm long, pubescent as the stem. Leaves becoming sessile upward. Blades cordate, crenate, ovate, pubescent on both surfaces, to +15cm long, +10cm broad, rounded to blunt at the apex, reduced upward.

Berlandiera texana leaves

Inflorescence - Corymbiform clusters of flower heads terminating the stems. Peduncles densely purplish pubescent.

Involucre - Phyllaries imbricate, to +1cm long, 7mm broad, pubescent, obovate to oblanceolate, green in apical half, whitish green near the base, slightly tapering to a subacute to blunt apex, entire. Involucre to 2cm broad.

Berlandiera texana involucreInvolucre.

Ray flowers - Fertile and pistillate. Ligule elliptic, often notched at the apex, yellow, glabrous adaxially, pubescent abaxially, to +1.5cm long, 1cm broad. Corolla tube 1mm long, pubescent. Stigmas purple, to 1.5mm long. Achenes orbicular to broadly ovate, compressed, glabrous on one side, comose on other side, to +4mm in diameter (in flower), becoming black at maturity. Pappus absent.

Disk flowers - Flowers staminate. Disk to 1.3cm broad. Disk corollas purple, to 4mm long, 5-lobed, glabrous. Lobes subacute to rounded, .6-.7mm long, densely grayish pubescent externally. Stamens 5, adnate at the base of the corolla tube. Filaments yellowish, glabrous, to 2mm long, connivent around the stigmas. Style 1.5mm long, pale yellow, glabrous. Stigma undivided, yellow, to +2mm long, pubescent. Achene pubescent, 2mm long (in flower), cylindric, .4mm in diameter. Pappus absent. Receptacle convex. Chaff densely pubescent. enclosing the achene and partially enclosing the corolla, to 5mm long, rounded and greenish at the apex, tapering to the base and whitish below.

Berlandiera texana flower

Flowering - June - October.

Habitat - Dry rocky open woods, glades, thickets.

Origin - Native to U.S.

Other info. - This species can be found in the southern Ozark region of Missouri. It is a characteristic plant of glades and rocky woods. B. texana is a very showy plant and deserves to be in cultivation.
The plant is easily identified in the field by its densely pubescent stems, clasping leaves, and habitat.

Photographs taken at the Peck Ranch Wildlife Refuge, Carter County, MO., 7-12-03.


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