Xanthisma grindelioides
Xanthisma blephariphyllum
goldenweed, gumweed aster, rayless tansyaster
10–30+, simple or branched in distal 1/3, moderately stout to stout, not wiry, hairy or minutely stipitate-glandular.
5–15+, often much branched in distal 1/2, moderately stout to stout, not wiry, hispidulous, sometimes minutely stipitate-glandular.
basal often persistent;
cauline evenly spaced, blades oblong, obovate, lanceolate to spatulate or narrowly ovate to obovate, 7–60 × 2–13 mm, gradually reduced distally, margins usually evenly coarsely serrate to serrulate, teeth 4–16 per side, each tipped with white bristle 0.5–4 mm, faces sparsely to densely hairy (hairs subappressed), often minutely stipitate-glandular.
basal withering by flowering;
cauline evenly spaced, oblong to oblanceolate, 15–45 × 4–15 mm, gradually reduced distally, margins evenly, finely or obscurely serrate or serrulate, teeth 12–25 per side, each tipped with white bristle 0.5–2 mm, faces densely hairy, occasionally stipitate-glandular.
sparsely to densely hairy, often stipitate-glandular;
sometimes bracteate.
moderately to densely hispidulous or hispid; ebracteate.
hemispheric to campanulate, 0.5–1 × 0.6–1.5 cm.
depressed-hemispheric, 4–8 × 8–15 mm.
0.
20–45;
corollas white, tubes 2–3.5 mm, laminae 9–13.5 × 2–3.1 mm.
15–50+;
corollas 5–8.5 mm.
60–120+;
corollas 4.6–6.3 mm.
in 3–5 series, oblong to broadly lanceolate, 2–9 mm, apices obtuse to acute, tipped by white seta, faces usually densely stipitate-glandular.
in 5–6 series, broadly linear or narrowly lanceolate, 2–7 mm, apices acuminate, often tipped by white seta or bristle, faces densely hairy, stipitate-glandular.
1–10+.
oblong to narrowly obovoid, 2–3.5 mm, ribs 12–24, densely whitish to tawny hairy;
pappi whitish to tawny, 3–7 mm, a few abaxial bristles to 1/3 of longest.
oblong to obovoid, 2–2.8 mm, 10–18-ribbed, faces moderately whitish to tawny hairy;
pappi tawny, 3–5.5 mm, a few abaxial bristles 1/3 length of longest.
= 8.
Xanthisma grindelioides
Xanthisma blephariphyllum
Varieties 2 (2 in the flora).
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Xanthisma blephariphyllum is known from the White and Guadalupe Mountains of southern New Mexico, and the Sierra Diablo, Glass, and Davis mountains of west Texas.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
1. Plants tufted, 10–35 cm; leaves evenly distributed along stems, margins usually ciliate, sometimes spinulose-dentate, bristles usually 0.5–1.5 mm; heads 1 or often 2–5; peduncles 0.5–2 cm, often bracteate to proximal to heads | var. grindeloides |
1. Plants densely cespitose, mostly 3–8 cm; leaves mostly crowded at base of stem, margins conspicuously white-bristled (1.5–)2–4 mm; heads usually 1; peduncles 1–4 cm, usually ebracteate | var. depressum |
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