Jepson Flora Project: Jepson Interchange    

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Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California
For up-to-date information about California vascular plants, visit the Jepson eFlora.



Ronald L. Hartman (except Silene)

Annual, biennial, perennial herb, rarely dioecious, taprooted or rhizome generally slender
Leaves simple, generally opposite; stipules generally 0; petiole generally 0; blade entire, sheath generally 0
Inflorescence: cyme, generally open; flowers few–many or flower solitary and axillary; involucre generally 0
Flower generally bisexual, radial; hypanthium sometimes present; sepals generally 5, ± free or fused into a tube, tube generally herbaceous between lobes or teeth; awns generally 0; petals generally 5 or 0, generally tapered to base (or with claw long, blade expanded), entire to 2–several-lobed, blade generally without scale-like appendages (inner surface), generally without ear-like lobes at base; stamens generally 10, generally fertile, generally free, generally from ovary base; nectaries generally 0; ovary superior, generally 1-chambered, placentas basal or free-central, styles 2–5 or 1 and 2–3-branched
Fruit: capsule or utricle (rarely modified, dehiscent), generally sessile
Seeds: appendage generally 0
Genera in family: 85 genera, 2400 species: widespread, especially arctic, alpine, temp, n hemisphere; some cultivated (Agrostemma, Arenaria, Cerastium, Dianthus, Gypsophila, Lychnis, Saponaria, Silene, Vaccaria ).


Perennial, erect, dioecious, taprooted
Leaf: stipules 0.8–3.5 mm, triangular, scarious, jagged to ciliate, white; blade linear to lanceolate; vein ± 1
Inflorescence axillary; flowers 1–4, sessile
Flower unisexual (appears bisexual); hypanthium in fruit conic to urn-shaped, abruptly expanded above; sepals 5, free, 1.1–2.1 mm, elliptic to round, ± glabrous, margin wide, scarious, white; petals 0; stamens 5, sterile in pistillate flower, 1–1.5 mm, oblong, petal-like, arising from hypanthium rim; nectaries wide; ovary sterile in staminate flower, style 3-branched in upper 1/3, ± 1.5 mm
Fruit: utricle, modified, ovoid; teeth 3, minute
Seed 1, tan
Species in genus: 2 species: sw US, Mex. Closely related to and possibly same as Achyronychia
Etymology: (Greek: fond of high places, from habitat)


S. rixfordii (Brandegee) Munz & I.M. Johnst.


Plant glabrous except base; leaf axils densely woolly
Stems many, branched above, 10–30 cm
Leaf: blade 8–25 mm, ± fleshy
Inflorescences eventually many
Flower 2.2–4.2 mm; hypanthium green, becoming brown, thickened, ± hard, ± angled; sepals erect to spreading, ± concave, often unequal, central portion linear to oblong, fleshy, green, margin much wider, entire to irregular, white, possibly deciduous
Seed 0.9–1.1 mm, ovoid, ± compressed, red dot near narrow end
Ecology: Uncommon. Limestone outcrops
Elevation: 1200–1550 m.
Bioregional distribution: East of Sierra Nevada, n Mojave Desert
Distribution outside California: w Nevada
Flowering time: Apr–Jul

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bioregional map for SCOPULOPHILA%20rixfordii being generated
YOU CAN HELP US make sure that our distributional information is correct and current. If you know that a plant occurs in a wild, reproducing state in a Jepson bioregion NOT highlighted on the map, please contact us with that information. Please realize that we cannot incorporate range extensions without access to a voucher specimen, which should (ultimately) be deposited in an herbarium. You can send the pressed, dried collection (with complete locality information indicated) to us (e-mail us for details) or refer us to an accessioned herbarium specimen. Non-occurrence of a plant in an indicated area is difficult to document, but we will especially value your input on those types of possible errors (see automatic conversion of distribution data to maps).

Retrieve Jepson Interchange Index to Plant Names entry for Scopulophila rixfordii
Retrieve dichotomous key for Scopulophila
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