Jepson Flora Project: Jepson Interchange    

 
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Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California
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CARYOPHYLLACEAE

PINK FAMILY

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 ).

MINUARTIA

SANDWORT

Annual, perennial herb, erect to mat-forming, taprooted or rhizomed
Leaf: blade thread-like to awl-shaped or narrowly oblong; veins or ribs 1–3
Inflorescence: cyme, terminal or axillary; flowers 2–many, open to ± dense, or flower solitary; peduncles and pedicels 0.5–35+ mm
Flower: hypanthium short, obscure; sepals 5, ± free, 1.9–7 mm, ± lanceolate to ovate, glabrous to glandular-hairy; petals 5 or 0, 0.7–10 mm, entire or notched; stamens arising from an obscure to prominent disk; styles 3, 0.3–2 mm
Fruit: capsule, narrowly ovoid to widely elliptic; teeth 3, ascending to recurved
Seeds 1–many, reddish tan to reddish, purplish, or blackish brown
Species in genus: 120 species: arctic to Mex, n Africa, s Asia
Etymology: (J. Minuart, Spanish botanist & pharmacist, 1693–1768)
Reference: [McNeill 1980 Rhodora 82: 495–502]

Native

M. obtusiloba (Rydb.) House

ALPINE SANDWORT

Perennial, cespitose to mat-forming, 1–12 cm, green, glandular-hairy; taproot > 3 mm diam
Stem in flower ± erect; trailing stem 2–20+ cm
Leaves 1.5–8 mm, 0.4–1 mm wide, > internodes, needle- to awl-shaped, ± straight, flexible, ± evenly spaced; axillary leaves well developed
Flower: sepals 2.9–4 mm, narrowly rounded; margin incurved, hood-like, ribs generally 3; petals 1.2–1.5 X sepals
Seed 0.6–0.7 mm; margin thick, reddish tan
Chromosomes: 2n=26,52, ±78
Ecology: UNCOMMON. Among dwarf willows, unglaciated granitics and metamorphics, alpine
Elevation: 3150–3700 m.
Bioregional distribution: c&s High Sierra Nevada
Distribution outside California: to Alaska, Colorado
Synonyms: Arenaria o. (Rydb.) Fernald
See the CNPS Inventory for information about endangerment and rarity.
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bioregional map for MINUARTIA%20obtusiloba 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 Minuartia obtusiloba
Retrieve dichotomous key for Minuartia
Overlay Consortium of California Herbaria specimen data by county on this map
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