Contains 19 accepted taxa overall.
Characteristics
Classification
Citation
COREOPSIS Linnaeus, Sp. Pl. 907. 1753.
-
TYPE: Coreopsis lanceolata Linnaeus Lectotypified by Britton & A. Brown, Ill. Fl. N. U.S., ed. 2. 3: 489. 1913.
Species
| Scientific Name | Common Name | Herbarium Specimens | Status | Photos |
|---|---|---|---|---|
| Coreopsis auriculata | ||||
| Coreopsis basalis | Lobed Coreopsis | |||
| Coreopsis delphiniifolia | Larkspur Coreopsis | |||
| Coreopsis falcata | Pool Coreopsis | |||
| Coreopsis gladiata | Swamp Coreopsis | |||
| Coreopsis grandiflora var. grandiflora | Large-flowered Coreopsis | |||
| Coreopsis grandiflora var. harveyana | Large-flowered Coreopsis | |||
| Coreopsis integrifolia | Chipola Dye-flower | |||
| Coreopsis lanceolata | Longstalk Coreopsis | |||
| Coreopsis latifolia | Broadleaf Coreopsis | |||
| Coreopsis linifolia | Savanna Coreopsis | |||
| Coreopsis major | Woodland Coreopsis | |||
| Coreopsis palustris | Beadle's Coreopsis | |||
| Coreopsis pubescens var. pubescens | Common Hairy Coreopsis | |||
| Coreopsis pubescens var. robusta | Mountain Hairy Coreopsis | |||
| Coreopsis rosea | Pink Tickseed, Rose Coreopsis | |||
| Coreopsis tinctoria var. tinctoria | Calliopsis, Plains Coreopsis | |||
| Coreopsis tripteris | Tall Coreopsis | |||
| Coreopsis verticillata | Threadleaf Coreopsis |
Identification Key
1. Ray corollas entire to minutely 2- or 3-fid at the apex; disc corollas 5-lobed, with 5 anthers; usually at least some proximal leaves palmately lobed or compound
1. Ray corollas distinctly 3-4-lobed at the apex, the median lobe often bilobed, sometimes with darker colored blotches at base or near middle; disc corollas 4- or 5-lobed with 4-5 anthers; leaves simple, pinnately divided, or with a few basal auricles
1. (Anacis key) Petioles 0-0.5 cm long; ray corolla 11-13-striate; disc corolla yellow
1. Petioles 0.5-5 cm long; ray corolla 16-17-striate; disc corolla red to purple or brownish
1. (Coreopsis key) Leaves opposite; disc corolla 5-lobed with 5 anthers, and yellow (if reddish, the ray corolla with reddish blotches near base)
1. Leaves alternate or opposite; disc corolla 4-lobed with 4 anthers, and reddish (if 5-lobed, then ray corolla without reddish blotches)
2
2. Leaves opposite, usually some pinnately divided; paleae linear-attenuate; cypselae oblong-elliptic, outer surface rounded, inner surface flat, wings entire
2. Leaves alternate or opposite, simple; paleae linear, oblanceolate, to spatulate; cypselae oblong, flattish, wings deeply fimbriate-lacerate
1. (sect. Coreopsis) Annuals; ray corolla often with reddish or purplish blotches near the base
2
1. Perennials; ray corolla without reddish blotches
3
2. Stem leafy throughout; phyllaries glabrous, occasionally with marginal cilia; disc corolla dark reddish purple; cypselae with corky, inflexed wings, epappose
2. Stem mostly with leaves at the base; phyllaries usually somewhat hairy; disc corolla yellow; cypselae with flat wings and 2 deciduous white pappi
3. Stem with leaves crowded towards the base, the main stem usually with up to 6 nodes above the base, the flowering stems to 25 cm long and sometimes bracteate distally, the peduncles half or more of the stem height; heads 3.5-6 cm wide at anthesis
4
3. Stem leafy throughout, with up to 12 nodes above the base, the flowering stems 8-20 cm long and leafy, the peduncles less than half the stem height; heads 2.5-4 cm wide at anthesis
5
4. Leaves 15-30 times longer than wide, occasionally the blade with 1-2 small lateral lobes, glabrous
4. Leaves 2.5-13(17) times longer than wide, sometimes some strongly lobed, glabrous to pubescent
5. Mid-cauline leaves simple or with 2-4 lobes, blade or segments ovate to elliptic-lanceolate, rarely linear-lanceolate
5. Mid-cauline leaves 1-2 pinnately divided with (3)5-9 linear-lanceolate segments
1. (sect. Calliopsis) Ray corolla yellow to orange-yellow; pappus 0.5-1.5 mm long, palea-like, triquetrous, antrorsely barbed or hispid; cypselae winged
1. Ray corolla yellow usually with a reddish-brown to purplish spot near base; pappus absent or of short awns to 0.5(1) mm long, glabrous; cypselae winged or not
1. (sect. Eublepharis) Leaves opposite, the blades ovate to elliptic, 15-35 mm wide
1. Leaves alternate, or opposite with blades linear to narrowly elliptic
2
2. Ray corolla lavender to purple-pink; disc corolla yellow-green to brown
2. Ray corolla yellow to orange, sometimes with a reddish area near the base; disc corolla reddish brown
3
3. Stem zigzag, internodes mostly shorter than the adjacent leaves, leafy to near the middle of the stem; leaves often with moniliform hairs; adaxial phyllaries oblong-linear to lanceolate; cypselae obovate
3. Stem mostly straight, internodes mostly longer than the adjacent leaves, leaves primarily basal; leaves glabrous; adaxial phyllaries deltoid to triangular; cypselae oblong
4
4. Leaves with inconspicuous (viewable at 40x) black dots; heads (30)40-75 mm wide, 5-15 mm high at anthesis; cypselae 2-4.5 mm long
4. Leaves often with numerous conspicuous black dots; heads 20-30(40) mm wide, 3-5 mm high at anthesis; cypselae 1.5-2 mm long
Genus Synonyms
| Synonym | Full Citation | Basionym | Type |
|---|---|---|---|
| No synonyms found. | |||