Common Name: LOASA FAMILY Habit: Annual to subshrub; hairs needle-like, barbed, occasionally stinging. Leaf: alternate [opposite], generally +- pinnate-lobed; stipules 0. Inflorescence: cyme, raceme. Flower: bisexual, radial; sepals generally 5, generally persistent; petals generally 5, free or fused to each other or filament tube; stamens 5--many, filaments thread-like to flat, occasionally fused at base or in clusters; petal-like staminodes occasionally present; pistil 1, ovary inferior, chamber generally 1, placentas generally 3, parietal, style 1. Fruit: capsule or achene. Seed: 1--many. Genera In Family: 18+ genera, 250 species: especially America (Africa, Pacific). eFlora Treatment Author: Larry Hufford & Barry Prigge, except as noted Scientific Editor: Douglas H. Goldman, Bruce G. Baldwin.
Common Name: BLAZING STAR Habit: Annual to perennial herb, sometimes subshrub-like; hairs barbed to needle-like, not stinging; stems pale pink or generally +- white, branched or not. Leaf: linear to ovate, entire to pinnate-lobed; basal in rosettes, generally petioled; cauline generally sessile, +- reduced distally on stem. Inflorescence: generally cyme (or flower 1); bracts green to white-centered, margin green. Flower: sepals lanceolate to deltate, persistent; petals generally 5, free, white to yellow or orange; stamens generally many, +- free, generally unequal, inner filaments generally thread-like; outermost stamens opposite sepal lobes often modified, +- widened, or petal-like, with or without anthers or not; ovary generally cylindric, placentas generally 3, style thread-like, stigma 3-furrowed or -lobed. Fruit: capsule, cup-, barrel-, or urn-shaped to narrowly cylindric, occasionally curved. Seed: generally many, shape variable, sometimes winged.
eFlora Treatment Author: Joshua M. Brokaw, John J. Schenk, Barry Prigge & David Keil Reference: Schenk & Hufford 2020 Syst Bot Monogr 110:1--230
Mentzelia crocea Kellogg
NATIVE Habit: Annual 34--100 cm. Stem: erect, hairy. Leaf: 1--40 cm, proximal lobed, distal toothed to lobed. Inflorescence: bracts ovate to obovate, 6--10-toothed, green. Flower: sepals 7--20 mm; petals 21--36 mm, 8--17(21) mm wide, elliptic to obovate, yellow, base generally orange; stamens 11--28 mm, outer > inner; style 20--35 mm. Fruit: erect to curved < 45°, 20--35 mm, 3--5 mm wide, obconic; seed rows +- 3 distal to mid-fruit. Seed: 1.5--2 mm, irregular-rounded to -angular, tan, dark-mottled; seed coat cells minute, domed to pointed. Chromosomes: 2n=36. Ecology: Rocky slopes, roadsides, grassland, oak/pine woodland; Elevation: < 1700 m. Bioregional Distribution: c&s SNF, s SNH. Flowering Time: May--Jun Note: Intergrades with Mentzelia lindleyi. Synonyms: Mentzelia lindleyi Torr. & A. Gray subsp. crocea (Kellogg) C.B. Wolf Jepson eFlora Author: Joshua M. Brokaw, John J. Schenk, Barry Prigge & David Keil Reference: Schenk & Hufford 2020 Syst Bot Monogr 110:1--230 Index of California Plant Names (ICPN; linked via the Jepson Online Interchange) Previous taxon: Mentzelia congesta Next taxon: Mentzelia desertorum
Citation for this treatment: Joshua M. Brokaw, John J. Schenk, Barry Prigge & David Keil 2023, Mentzelia crocea, in Jepson Flora Project (eds.) Jepson eFlora, Revision 12, https://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=33231, accessed on November 06, 2024.
Citation for the whole project: Jepson Flora Project (eds.) 2024, Jepson eFlora, https://ucjeps.berkeley.edu/eflora/, accessed on November 06, 2024.
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(Note: any qualifiers in the taxon distribution description, such as 'northern', 'southern', 'adjacent' etc., are not reflected in the map above, and in some cases indication of a taxon in a subdivision is based on a single collection or author-verified occurrence).
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Blue markers indicate specimens that map to one of the expected Jepson geographic subdivisions (see left map). Purple markers indicate specimens collected from a garden, greenhouse, or other non-wild location.
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CCH collections by month
Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa, if there are more than 1 infraspecific taxon in CA.
Blue line denotes eFlora flowering time (fruiting time in some monocot genera).