Flora of North America species comparison

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Senna covesii

Coues' cassia, Coves' cassia, desert senna
Habit Herbs, perennial, to 0.7 m. Leaves slightly sclerophyllous, 2–10 cm, hairy; stipules persistent, to 1 mm wide; extrafloral nectaries between all leaflet pairs, stipitate; leaflet pairs 2–4, blades obovate to elliptic-obovate or oblong-elliptic, 10–38 × 5–19 mm.
Racemes

(2–)4–8-flowered;

bracts caducous.
Pedicels

8–17 mm.
Flowers

monosymmetric;

calyx pale green, pinkish, or yellowish;

corolla golden yellow, longest petal 9–15 mm;

androecium not heterantherous, stamens 7, staminodes 3;

anthers 2.5–4.2 mm, dehiscing by 1 apical pore, apical appendage 0;

gynoecium linear, slightly incurved, ovules 28–42;

ovary hairy;

style filiform, incurved.
Legumes

erect, cylindrical, slightly curved, 180–350 × 50–80 mm, shallowly corrugated over seeds, dehiscing apically downward.
Seeds

brown, rhomboid.

Senna covesii
Phenology Flowering late winter–early fall.
Habitat Sandy and gravelly desert washes, slopes, and stony hills, disturbed desert roadsides.
Elevation 0–1200 m. (0–3900 ft.)
Distribution
from FNA
AZ; CA; NM; NV; Mexico (Baja California, Sinaloa, Sonora)
[WildflowerSearch map]
[BONAP county map]
Source FNA vol. 11.
Parent taxa Fabaceae > subfam. Caesalpinioideae (excluding Mimosoid clade) > Senna
Sibling taxa
S. alata, S. armata, S. artemisioides, S. atomaria, S. bauhinioides, S. corymbosa, S. durangensis, S. hebecarpa, S. hirsuta, S. ligustrina, S. lindheimeriana, S. marilandica, S. mexicana, S. multiglandulosa, S. obtusifolia, S. occidentalis, S. orcuttii, S. pendula, S. pilosior, S. pumilio, S. ripleyana, S. roemeriana, S. surattensis, S. wislizeni
Synonyms Cassia covesii, Earleocassia covesii
Name authority (A. Gray) H. S. Irwin & Barneby: Phytologia 44: 499. (1979)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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(If the plant you're looking for doesn't show up in the auto-complete list, that means it either isn't described in Flora of North America yet, or it's listed under a synonym. And please note that Flora of North America is still missing several plant families, including Fabaceae, Apiaceae, Boraginaceae, and Polemoniaceae.)

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