The green links below add additional plants to the comparison table. Blue links lead to other Web sites.
enable glossary links

Arizona yellowhood

broadsepal yellowhood

Stems

prostrate, to 1.2 m, moderately white-pubescent and glandular-setose.

climbing, to 1.5 m, moderately crisp-pubescent or glabrescent.

Leaves

0.5–6 cm;

stipules deltate-ovate, 5–7 × 1–2.5 mm;

leaflets 5, usually folded when dry, axis recurved, blades orbiculate to elliptic, 4–20 × 4–22 mm, base obtuse to subcordate, apex obtuse to emarginate, mucronulate, surfaces puberulent to glabrate abaxially, glabrous adaxially.

4–7 cm;

stipules lanceolate, 3–5 × 0.5–1 mm;

leaflets 5 or 7, usually not folded when dry, axis ± straight, blades elliptic to oblong, 5–25 × 4–15 mm, base obtuse, apex obtuse, mucronulate, surfaces glabrous.

Inflorescences

1–5-flowered, fasciculate.

1–4-flowered, racemes.

Pedicels

3–20 mm.

9–11 mm.

Flowers

calyx (3–)4–5 mm, puberulent and setose;

tube (2–)3–4 mm × 3 mm;

lobes deltate-subulate, 1 mm;

corolla (8–)10–15 mm.

calyx 6.5–10 mm, pubescent to glabrate;

tube 4.5–6 × 4–5 mm;

lobes subulate, 1.5–4.5 mm;

corolla 14–20 mm.

Seeds

5 × 3 mm.

5 × 3 mm.

Loments

2–5-segmented, 20–40 mm, pubescent to glabrate;

fertile segments 7–10 × 3–7 mm, sterile segment 6–11 × 3–7 mm;

stipe 1–2 mm.

2–4-segmented, 30–50 mm, pubescent to glabrate;

fertile segments 5–7 × 5 mm, sterile segment 20–30 × 6–10(–15) mm;

stipe 4 mm.

Nissolia wislizeni

Nissolia platycalyx

Phenology Flowering Jul–Aug. Flowering May–Sep.
Habitat Open grasslands, mesas, slopes. Chaparral slopes.
Elevation 1500–1600 m. (4900–5200 ft.) 1700 m. (5600 ft.)
Distribution
from FNA
AZ; Mexico (Aguascalientes, Chihuahua, Durango, Guanajuato, Hidalgo, Jalisco, Oaxaca, Querétaro, San Luis Potosí, Sonora, Zacatecas)
[BONAP county map]
from FNA
TX; Mexico (Chihuahua, Coahuila, Durango, Nuevo León, San Luis Potosí, Tamaulipas, Veracruz)
[BONAP county map]
Discussion

Nissolia wislizeni is known from Coconino County in the flora area.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Nissolia platycalyx is known from Brewster County in the flora area.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 11. FNA vol. 11.
Parent taxa Fabaceae > subfam. Faboideae > Nissolia Fabaceae > subfam. Faboideae > Nissolia
Sibling taxa
N. platycalyx, N. schottii
N. schottii, N. wislizeni
Synonyms Chaetocalyx wislizeni
Name authority (A. Gray) A. Gray: J. Proc. Linn. Soc., Bot. 5: 25. (1861) S. Watson: Proc. Amer. Acad. Arts 17: 344. (1882)
Web links