Rock Garden Plants
Pleiacanthus spinosus (Nutt.) Rydb. trib. Cichorieae 
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FamilyASTERACEAE
Genus speciesPleiacanthus spinosus (Nutt.) Rydb. trib. Cichorieae
SynonymsLygodesmia spinosa Nutt.
Habitatdry, rocky slopes
Altitude1500-2900m
Descriptionstem ramose, rigid, tipped with spine, lower stem leaves sessile, linear, entire, the upper scaly, capitula solitary, pedunculate, involucre uniseriate
Size10-50cm
Colorrose, bluish purple
Bloomsummer
Ca
Typesubshrub
Cultivationsunny, dry, rock crevices, protection against winter wet
alpine house, poor, drained soil, sun
Propagationseed in spring, barely covered, germ. 1 month, 10-16°C
cuttings in late summer
Territory Northern America
     Northwestern U.S.A. (Idaho , Montana , Oregon )
     Southwestern U.S.A. (Arizona , California , Nevada , Utah)
BibliographyPlants of the World online powo.science.kew.org
International Plant Names Index www.ipni.org
Comments

ASTERACEAE

Pleiacanthus spinosus (Nutt.) Rydb., Fl. Rocky Mts. 1023 (1917)

Basionym:
Lygodesmia spinosa Nutt., Trans. Amer. Philos. Soc. ser. 2. 7: 444 (1841)

Synonyms:
Stephanomeria spinosa (Nutt.) Tomb

w. USA
73 IDA MNT ORE 76 ARI CAL NEV UTA

1500-2900m

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