Argythamnia cyanophylla

(Wooton & Standley) J. W. Ingram

Bull. Torrey Bot. Club 80: 423. 1953

Common names: Charleston Mountain silverbush bruise leaf
Selected by author to be illustratedEndemic
Basionyms: Ditaxis cyanophylla Wooton & Standley Bull. Torrey Bot. Club 36: 106. 1909
Synonyms: D. diversiflora Clokey
Treatment appears in FNA Volume 12. Treatment on page 176. Mentioned on page 173.
Click plate for higher resolution version.
Herbs, perennial, monoecious, to 2.5 dm. Stems erect, sparsely hairy, hairs malpighiaceous. Leaves: stipules apparently persistent, punctiform, minute, margins glandular; petiole absent; blade elliptic, obovate, or linear, 1–5 × 0.5–2.2 cm, margins entire, without glands, surfaces sparsely hairy, hairs malpighiaceous. Inflorescences unisexual or bisexual, to 4 cm; bracts ovate to lanceolate, to 1.5 mm, margins without glands. Flowers without pink dye when wetted. Staminate flowers: sepals lanceolate, 3.5–7 × 1–1.3 mm; petals spatulate to obovate, 3–5 × 1.5 mm, adnate to androphore; nectary glands elliptic, 0.3 × 0.2 mm, adnate to androphore, glabrous; stamens (7–)10, staminodes 0 or rudimentary. Pistillate flowers: sepals lanceolate to ovate, 3.5–7 × 1.5–2.2 mm, without glands; petals 5, obovate to spatulate, 2.8–3.5 × 0.7–2.8 mm; nectary glands obovate, 0.5 × 0.7 mm, glabrous; ovary sericeous; styles 1.6–2 mm, glabrous; stigmas flattened. Capsules 3–5.5 mm, with scattered adpressed malpighiaceous hairs. Seeds 3.5–4 mm, smooth, maculate.

Phenology: Flowering Mar–Jun and Aug–Oct.
Habitat: Scrub, pinyon-juniper woodlands, limestone-derived, rocky soils, damp zones near lakes.
Elevation: 2000–2600 m.


Argythamnia cyanophylla is found from southern Nevada across northern Arizona to central New Mexico.



Lower Taxa

No lower taxa listed.

AuthorYocupitzia Ramírez-Amezcua +
Authority(Wooton & Standley) J. W. Ingram +
BasionymsDitaxis cyanophylla +
Common nameCharleston Mountain silverbush + and bruise leaf +
DistributionAriz. +, Nev. + and N.Mex. +
Elevation2000–2600 m. +
HabitatScrub, pinyon-juniper woodlands, limestone-derived, rocky soils, damp zones near lakes. +
PhenologyFlowering Mar–Jun and Aug–Oct. +
Publication titleBull. Torrey Bot. Club +
Publication year1953 +
ReferenceNone +
Source xml grained fna xml/V12/V12 698.xml +
Special statusSelected by author to be illustrated + and Endemic +
SynonymsD. diversiflora +
Taxon familyEuphorbiaceae +
Taxon nameArgythamnia cyanophylla +
Taxon parentArgythamnia +
Taxon rankspecies +
VolumeVolume 12 +