Flora of North America species comparison

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Platyschkuhria integrifolia

Platyschkuhria

basin daisy, desert basindaisy

basindaisy
Habit Perennials, 10–50+ cm (bases ± woody, branched caudices).
Stems

± erect.
Leaves

blades 2–10 cm × 5–35+ mm.

basal and cauline; mostly alternate; petiolate;

blades mostly lanceolate, sometimes ± ovate, margins en- tire, faces sparsely to densely scabrellous (hairs white, straight, conic or fusiform, 0.1–0.8 mm) and gland-dotted.
Involucres

9–12+ × 12–25+ mm.

campanulate to ± hemispheric, 12–25+ mm diam.
Receptacles

± convex, ± pitted, epaleate.
Ray florets

6–12, pistillate, fertile;

corollas yellow.
Disc florets/Disc corollas

3–6(–7) mm.

25–80+, bisexual, fertile;

corollas yellow to orange (gland-dotted), tubes about equaling funnelform to campanulate throats, lobes 5, deltate to lance-deltate.
Phyllaries

9–21 in ± 2 series, distinct, subequal, oblong or elliptic to lanceolate, herbaceous, membranous-margined (not purplish-margined), persistent, reflexed in fruit.
Heads

radiate, borne singly or (3–11) in loose, corymbiform to paniculiform arrays.
Cypselae

(1–)3–5(–8) mm;

pappi 0.6–3+ mm.

narrowly obpyramidal, 4-angled, finely nerved, ± hirsutulous (at least on angles), not gland-dotted;

pappi of 8–16, (distinct) lance-elliptic to lance-subulate (basally and/or medially thickened, distally and/or laterally scarious) scales in 1 series (weakly, if at all, aristate).
Ray

corolla laminae 6–16 mm.

x

= 12.
2n

= 24, 48, 60, 72.

Platyschkuhria integrifolia

Platyschkuhria
Phenology Flowering May–Jul.
Habitat Seleniferous clays, shaley slopes
Elevation 1100–2200 m (3600–7200 ft)
Distribution
from FNA
AZ; CO; MT; NM; UT; WY
[WildflowerSearch map]
[BONAP county map]
from USDA
w United States
[BONAP county map]
Discussion

Specimens of Platyschkuhria integrifolia with stems leafy over 3/4+ of their lengths have been called var. oblongifolia (mostly from “four-corners” area of Arizona, Colorado, New Mexico, and Utah). Those with leaves mostly on proximal 1/10–3/4 their stem lengths, peduncles little or not at all stipitate-glandular, and phyllary tips ± caudate have been called var. ourolepis (mostly from Uinta Basin, Utah). Those with leaves mostly on proximal 1/10–3/4 their stem lengths, leaf blades widest beyond their middles and rounded at tips, peduncles ± stipitate-glandular, and phyllary tips acute to acuminate have been called var. nudicaulis (mostly from Montana and Wyoming). Those with leaves mostly on proximal 1/10–3/4 their stem lengths, leaf blades widest proximal to their middles and acute at tips, peduncles ± stipitate-glandular, and phyllary tips obtuse to acute or acuminate have been called var. desertorum (mostly from western Colorado and eastern Utah).

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Species 1.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 21, p. 394. FNA vol. 21, p. 394. Author: John L. Strother.
Parent taxa Asteraceae > tribe Heliantheae > subtribe Chaenactidinae > Platyschkuhria Asteraceae > tribe Heliantheae > subtribe Chaenactidinae
Subordinate taxa
P. integrifolia
Synonyms Schkuhria integrifolia, Bahia nudicaulis, Bahia nudicaulis var. desertorum, Bahia nudicaulis var. oblongifolia, Bahia nudicaulis var. ourolepis, P. integrifolia var. desertorum, P. integrifolia var. oblongifolia, P. integrifolia var. ourolepis Schkuhria section P.
Name authority (A. Gray) Rydberg: Bull. Torrey Bot Club 33: 155. (1906) (A. Gray) Rydberg: Bull. Torrey Bot. Club 33: 154. (1906)
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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