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Stanleya confertiflora (B. L. Rob. ) Howell
Life   Plantae   Dicotyledoneae   Brassicaceae   Stanleya

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Stanleya confertiflora (B.L. Rob.) Howell
Oregon princesplume

General Information
Symbol: STCO2
Group: Dicot
Family: Brassicaceae
Duration: Annual
Growth Habit : Forb/herb
Native Status : L48   N
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Native Status:
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Symbol Scientific Name
STAN5 Stanleya annua M.E. Jones
STRA2 Stanleya rara A. Nelson
STVIC Stanleya viridiflora Nutt. var. confertiflora B.L. Rob.


Click on a scientific name below to expand it in the PLANTS Classification Report.
Rank Scientific Name and Common Name
Kingdom Plantae – Plants
Subkingdom Tracheobionta – Vascular plants
Superdivision Spermatophyta – Seed plants
Division Magnoliophyta – Flowering plants
Class Magnoliopsida – Dicotyledons
Subclass Dilleniidae
Order Capparales
Family Brassicaceae ⁄ Cruciferae – Mustard family
Genus Stanleya Nutt. – princesplume
Species Stanleya confertiflora (B.L. Rob.) Howell – Oregon princesplume

Subordinate Taxa

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Source Large Mammals Small Mammals Water Birds Terrestrial Birds


Source Large Mammals Small Mammals Water Birds Terrestrial Birds

Description of Values

Value Class Food Cover

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Following modified from Flora of North America
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FNA Vol. 7 Page 695, 696 , 697 Login | eFloras Home | Help
FNA | Family List | FNA Vol. 7 | Brassicaceae | Stanleya

3. Stanleya confertiflora (B. L. Robinson) Howell, Fl. N.W. Amer. 59. 1897.

Stanleya viridiflora Nuttall var. confertiflora B. L. Robinson in A. Gray et al., Syn. Fl. N. Amer. 1(1,1): 178. 1895; S. annua M. E. Jones; S. rara A. Nelson

Annuals or biennials; (glaucous), glabrous throughout. Stems erect, unbranched, (slightly ribbed), 2-6(-8) dm. Basal leaves (often withered by flowering); blade obovate to ovate, margins entire. Cauline leaves sessile; blade (fleshy), lanceolate, (2.2-)4-13(-16) cm × (5-)10-30(-40) mm, (smaller distally, base auriculate to sagittate), margins entire. Racemes dense, (slightly or not elongated in fruit). Fruiting pedicels horizontal to divaricate-ascending, 10-20(-26) mm. Flowers: sepals oblong-linear, 6-12 mm; petals yellow becoming whitish, narrowly linear to filiform, (12-)14-25 × 0.5-1.5 mm, (margins crisp), claw (nearly linear), 5-11 mm, slightly wider at base; filaments 12-17 mm; anthers 3-4.5 mm; gynophore (6-)10-18 mm. Fruits suberect to divaricate-ascending, slightly curved inward, (torulose), subterete, 2-5.2(-6) cm × 1.5-2.2 mm; ovules 40-62 per ovary; style 0.6-1.7 mm. Seeds oblong, 1.5-2.5 × 0.8-1 mm.

Flowering Apr-Jun. Barren clay slopes in sagebrush communities, heavy clay flats, loose soil mounds, dry sandy grounds, alkaline meadows and flats; of conservation concern; 600-1500 m; Idaho, Oreg.

Stanleya confertiflora is distributed in Gooding, Owyhee, and Washington counties in Idaho, and in Baker, Harney, and Malheur counties in Oregon.

Updated: 2019-10-18 07:05:52 gmt
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