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Species
Senna obtusifolia (L.) Irwin & Barneby
IUCN
NCBI
EOL Text
Annual, Herbs, Woody throughout, Stems woody below, or from woody crown or caudex, Taproot present, Stems erect or ascending, Stems less than 1 m tall, Stems solid, Stems or young twigs glabrous or sparsely glabrate, Leaves alternate, Leaves petiolate, Extrafloral nectary glands on petiole, Stipules conspicuous, Stipules setiform, subulate or acicular, Stipules deciduous, Stipules free, Leaves compound, Leaves even pinnate, Le af or leaflet margins entire, Leaflets opposite, Leaflets 10-many, Leaves glabrous or nearly so, Flowers solitary in axils, or appearing solitary, Flowers in axillary clusters or few-floweredracemes, 2-6 flowers, Inflorescences racemes, Inflorescence axillary, Bracts very small, absent or caducous, Flowers actinomorphic or somewhat irregular, Calyx 5-lobed, Calyx hairy, Petals separate, Petals orange or yellow, Fertile stamens 6-8, Stamens heteromorphic, graded in size, Stamens completely free, separate, Filaments glabrous, Anthers opening by basal or terminal pores or slits, Style terete, Fruit a legume, Fruit stipitate, Fruit unilocular, Fruit tardily or weakly dehiscent, Fruit elongate, straight, Fruit strongly curved, falcate, bent, or lunate, Fruits quadrangulate, Fruit exserted from calyx, Fruit inflated or turgid, Fruit compressed between seeds, Fruit glabrous or glabrate, Fruit 11-many seeded, Seed with elliptical line or depression, pleurogram, Seeds ovoid to rounde d in outline, Seed surface smooth, Seeds olive, brown, or black.
License | http://creativecommons.org/licenses/by-nc-sa/3.0/ |
Rights holder/Author | Compiled from several sources by Dr. David Bogler, Missouri Botanical Garden in collaboration with the USDA NRCS NPDC |
Source | http://plants.usda.gov/java/profile?symbol=SEOB4 |
Cassia obtusifolia L.
An erect subglabrous herb or undershrub, 0.5-2 m tall. Leaf stipulate, sti¬pule 5-10 mm long, linear, petiole 2-3 cm long, rachis 1-4 cm long, gland c. 2 mm long, present between lowest petiolules, petiolules c. 2.5 mm, leaflets 3 pairs, 1.5-6 cm long, 1.2-3 cm wide, obovate, upper surface glabrous, lower surface hairy, rounded at the top, apex minutely acute, base tapering, cuneate to acute, slightly oblique. Racemes short, peduncle c. 2 mm long, bearing 1-2 flowers. Bracts linear-acute, glabrous except the edges, 4-8 mm long, pedicel 1.2-3.5 cm long, in fruit up to 4.5 cm long, hairy. Sepals membranous, ovate, acute to rounded-ovate, 6-7 mm long, glabrous or hairy on edge. Petals unequal in size, more or less ovate, obtuse or rounded, 12-15 mm long, the upper petal truncate or emargi¬nate, narrow at the base, but claw indistinct. Stamens 10, 3 lower longest, 4 lateral smaller, 3 upper stamens staminodial. Ovary more or less glabrous, ribbed, style glabrous, stigma truncate. Pods subterete, glabrous to subglabrous, indehiscent, 10-25 cm long, 4-8 mm wide, septate, 20-50 seeded, seeds rhomboidal, dark brown, 4-5 mm long, albumen copious.
License | http://creativecommons.org/licenses/by-nc-sa/3.0/ |
Rights holder/Author | eFloras.org Copyright © Missouri Botanical Garden |
Source | http://www.efloras.org/florataxon.aspx?flora_id=5&taxon_id=242311371 |
The extra-floral nectaries attract ants primarily; they may also attract some wasps, flies, or small bees. The pollen of the flowers attract long-tongued bees, such as bumblebees, Miner bees, and large Leaf-Cutting bees. The caterpillars of several species of Sulfur butterflies are known to feed on the foliage of Cassia spp., including Eurema lisa (Little Sulfur), Eurema nicippe (Sleepy Orange), and Phoebis sennae cubule (Cloudless Sulfur). Some upland gamebirds occasionally eat the seeds of Senna spp., especially the Bobwhite and Greater Prairie Chicken. Mammalian herbivores are unlikely to utilize this plant as a food source to any significant extent because of the unpleasant taste and toxic nature of the foliage, which has been found capable of poisoning livestock. Photographic Location
License | http://creativecommons.org/licenses/by-nc/3.0/ |
Rights holder/Author | Copyright © 2002-2014 by Dr. John Hilty |
Source | http://www.illinoiswildflowers.info/prairie/plantx/sicklepodx.htm |
Frequent
Fl. Per.: August-September.
License | http://creativecommons.org/licenses/by-nc-sa/3.0/ |
Rights holder/Author | eFloras.org Copyright © Missouri Botanical Garden |
Source | http://www.efloras.org/florataxon.aspx?flora_id=5&taxon_id=242311371 |
Barcode of Life Data Systems (BOLDS) Stats
Public Records: 3
Specimens with Barcodes: 22
Species With Barcodes: 1
Barcode of Life Data Systems (BOLDS) Stats
Public Records: 1
Specimens with Barcodes: 4
Species With Barcodes: 1