Texas Palafox

Plants of Palafoxia texana with non-stipitate-glandular phyllaries (versus stipitate-glandular) and pappus scales (on inner cypselae) 1–4 (versus 3–6) mm have been treated as var. ambigua. Some specimens are not readily assignable to either variety, and some are not readily assignable to either P. rosea or P. texana.

Annuals or perennials (subshrubs), 20–80 cm. Stems ± scabrous, not stipitate-glandular. Leaf blades ovate-lanceolate to linear-lanceolate, 30–80 × (5–)10–20 mm. Involucres ± turbinate. Phyllaries 5–8 × 1–2.5 mm, ± equal, scabrellous, rarely stipitate-glandular. Ray florets 0. Disc florets 10–25; corollas actinomorphic, 7–10 mm, throats ± funnelform, shorter than lobes. Cypselae 4–6 mm; pappus scales of inner cypselae 2–6 mm. 2n = 22.

Palafoxia texana var. ambigua (Shinners) B. L. Turner & M. I. Morris

Othake robustum Rydberg, sp. nov
A stout annual; stem simple, strigose, densely grayish strigose-hispidulous, 6-10 dm. high, scarcely at all glandular; leaves petioled, narrowly lanceolate, 3-ribbed, 4-7 cm. long, thick, grayish-hispidulous; heads corymbose, with short peduncles; involucre broadly turbinate, 7 mm. high, about 10 mm. broad; bracts about 15, Hnear, hispidulous; ray-flowers wanting; corollas rose-colored; tube and lobes each 2.5-3 mm. long; achenes 5-6 mm. long, 1 mm. thick, hispidulous; squamellae ovate or obovate, 1.5-2 mm. long.
Type collected on sand-dunes of Gulf Coast, Tampico, Tamaulipas, July 4, 1896, Pringle 6354 (herb. Columbia Univ.).
Distribution: Southern Texas and Tamaulipas.

Othake texanum (DC.) Bush, Trans. Acad. St. Louis 14: 176
1904.
Palafoxia iexana DC. Prodr. 5: 125. 1836.
Polypleris lexa^ta A. Gray, Proc. Am. Acad. 19: 30. 1883. A rather stout annual; stem 2-6 dm. high, strigose-hirsute, with ascending branches,
only the peduncles sUghtly glandular; leaves short-petioled, from ovate-lanceolate to
linear-lanceolate, strigose-hirsutulous, 2-5 cm. long, 5-25 mm. wide, more or less distinctly
3-nerved; involucre turbinate, 6-10 mm. long, 8-10 mm. broad; bracts 8-15, oblanceolate,
rose-tipped, hirsutulous, scarcely glandular; ray-flowers wanting; corollas rose-colored;
tube and linear lobes each 4-5 mm. long; achenes 5-6 mm. long, 1 mm. thick, hirsute; squa-
mellae lanceolate, acute or acuminate, about 3 mm. long, or those of the outer achenes obovate,
obtuse, and 1.5-2 mm. long.
Type locality: Texas.
Distribution: Oklahoma to Tamaulipas and Coahuila.