| Literature for Dubautia knudsenii
Wagner et al., 1990, 1999. Literature for Dubautia knudsenii subsp. knudsenii
Wagner et al., 1990, 1999. Literature for Dubautia knudsenii subsp. nagatae
Wagner et al., 1990, 1999. Literature for Dubautia knudsenii subsp. filiformis
Wagner et al., 1990, 1999.
|Asteraceae -- The Sunflower Family||Bibliography|
||Shrubs or small trees up to 6 m tall; stems glabrous or glabrate.
||Leaves opposite, elliptic to elliptic-oblanceolate, 5-22 cm long, 1-5 cm wide, usually faintly 5-9-nerved, occasionally also reticulate, with elongate areola, upper surface glabrous, glabrate, or appressed puberulent, lower surface glabrous to uniformly ascending puberulent, margins conspicuously toothed in upper 1/2-2/3, finely ciliolate to conspicuously ciliate, at least near base, apex usually short-acuminate, narrowly margined petioles 0.8-4 cm long, the base dilated and briefly connate.
||Heads usually ca. 5-100 in usually lax, erect to strongly reflexed, simple to decompound, corymbose inflorescences 3-15 cm long, 2.5-20 cm wide, lower peduncles ± copiously hirtellous to glabrous, upper and ultimate peduncles copiously hirtellous to puberulent in broad bands opposite the bracts, ultimate peduncles usually 1-45 mm long; receptacle flat to convex, false involucre consisting of usually 4-12 peripheral, receptacular bracts in 1-2 irregular series, irregularly connate 1/4 their length or more, sometimes connate only at base upon drying, each usually 4-7 mm long, uniformly purplish black, sparsely puberulent to glabrous; florets 4-25 per head, corollas yellow, veins red, ca. 2.5-3.5 mm long, not exserted, densely covered with coarse, apparently sessile glands on the tube; pappus of usually 15-24 very narrowly linear-lanceolate, short-fimbriate-ciliolate bristles 2.5-4 mm long.
||Achenes ca. 2.5-4 mm long, moderately hispid to sparsely hispidulous.
||2n = 28*
||One plant tested self-incompatible.