Flora of North America species comparison

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Thelesperma subnudum

hairy greenthread, Navajo tea
Habit Perennials, 10–30(–40+) cm (caudices often woody).
Cauline leaves

mostly crowded over proximal 1/4(–1/2) of plant heights, internodes mostly 1–5(–35 mm);

lobes mostly oblanceolate to linear, (5–)10–35(–45+) × (1–)2–3(–5) mm.
Ray florets

0, or 8;

laminae yellow, (6–)12–20+ mm.
Disc corollas

yellow, sometimes with red-brown nerves, throats equal to or longer than lobes.
Calyculi

of 7–9 deltate to lance-linear bractlets 2–4+ mm.
Cypselae

5–7 mm;

pappi usually 0, rarely 0.1–0.5 mm.
2n

= 22, 24.

Thelesperma subnudum
Phenology Flowering May–Sep.
Habitat Openings in pinyon/juniper or yellow-pine forests, often on talus or "balds"
Elevation 1000–2900 m (3300–9500 ft)
Distribution
from FNA
AZ; CO; MT; ND; NM; NV; UT; WY; AB
[WildflowerSearch map]
[BONAP county map]
Discussion

As here circumscribed, Thelesperma subnudum includes plants that have been treated as distinct species and/or varieties (some of which have been treated as of conservation concern). See C. J. Hansen et al. (2002) for an alternate interpretation of T. subnudum.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 21, p. 201.
Parent taxa Asteraceae > tribe Heliantheae > subtribe Coreopsidinae > Thelesperma
Sibling taxa
T. ambiguum, T. burridgeanum, T. filifolium, T. flavodiscum, T. longipes, T. megapotamicum, T. nuecense, T. simplicifolium
Synonyms T. caespitosum, T. marginatum, T. pubescens, T. pubescens var. caespitosum, T. subnudum var. alpinum, T. subnudum var. marginatum, T. subnudum var. pubescens, T. windhamii
Name authority A. Gray: Proc. Amer. Acad. Arts 10: 72. (1874)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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