Species Information
Kingdom: Plantae
Phylum: Anthophyta
Class: Dicotyledoneae
Order: Rosales
Family: Hydrangeaceae
Genus: Philadelphus
Species: argyrocalyx
Silvercup Philadelphus - Philadelphus argyrocalyx
Image courtesy of New Mexico Rare Plants
491572
Species Extent (New Mexico)
General Description
Erect shrub 1-2 m tall; leaves opposite, ovate, ovate-lanceolate or narrowly elliptic, margins entire, 10-35 mm long, 4-17 mm wide, glabrous or glabrescent above, sparsely villous hairy below, petiole about 2 mm long; flowers usually solitary (rarely 2 or 3) at the end of a short shoot 2-4 cm long with 2-4 pairs of leaves; calyx tube forming a cup (hypanthium); pedicels, hypanthia and sepals covered in dense tomentum of short, woolly hairs and longer, straight hairs; sepals 4; petals 4, white, 1.2-2.2 cm long, 0.7-1.8 cm wide; corolla cruciform, 2.2-4.2 cm across; stamens about 55, filaments fused into bundles; style and hypanthium disk glabrous; each seed long-tailed. Flowers June to August.
Status
Observations in Natural Heritage New Mexico Database
Number of Subpopulations: 12
Number of Mapped Locations: 13
Number of Observations: 14
Observation date range: 07-08-1936 to 08-02-2010
External Links
View More Information about this species at:
NatureServe Explorer
New Mexico Rare Plants Website
Environmental Conservation Online System (ECOS)
NatureServe Explorer
New Mexico Rare Plants Website
Environmental Conservation Online System (ECOS)