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Peritoma jonesii

Peritoma jonesii (J. F. Macbride) H. H. Iltis

Jones Bee-plant, Jones Spiderflower

Capparaceae (Caper Family)

Synonym(s): Cleome jonesii, Cleome lutea var. jonesii

USDA Symbol: PEJO

USDA Native Status: L48 (N)

"Annuals, 50-100(-200) cm. Stems sparsely branched distally; glabrous or glabrate. Leaves: petiole 1.5-4.5 cm; leaflets 5, (proximal ones sometimes early deciduous), blade linear to elliptic, 1.5-4(-6) � 0.4-1.3 cm, margins serrate , apex long-acuminate, surfaces glabrous. Racemes 1-3 cm (6-40 cm in fruit); bracts unifoliate, obovate to spatulate, 2-15 mm. Pedicels 7-15 mm. Flowers: sepals persistent, connate ca. 1/2 of length, yellow, lanceolate, 1.6-2.6 � 0.8-1.2 mm, margins denticulate, glabrous; petals golden yellow, oblong to ovate, 10-13 � 2-4 mm; stamens yellow, 20-30 mm; anthers 1.9-2.6 mm; gynophore 15-25 mm in fruit; ovary 3-6 mm; style 0.5-0.8 mm. Capsules not inflated, 40-60 � 2-5 mm, striate. Seeds 15-30, gray to black, triangular (sharply angled), 3-4 � 2.5-3 mm, rugose." (Webref: 3).

"Often treated as a variety of Peritoma lutea, P. jonesii grows at lower elevations, has a more southerly (though overlapping) range (T. H. Kearney and R. H. Peebles 1960), and differs in morphological features. Most notable are its larger, showier flowers and longer capsules." (Webref: 3).

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Plant Characteristics

Duration: Annual
Habit: Herb
Leaf Arrangement: Alternate
Leaf Complexity: Palmate
Leaf Shape: Elliptic , Linear
Leaf Pubescence: Glabrous
Leaf Margin: Serrate
Leaf Apex: Acuminate
Inflorescence: Axillary , Raceme , Terminal
Fruit Type: Capsule
Size Notes: Usually to about 3 feet (occasionally, up to six feet) in height.
Leaf: "Leaves: petiole 1.5-4.5 cm; leaflets 5, (proximal ones sometimes early deciduous), blade linear to elliptic, 1.5-4(-6) x 0.4-1.3 cm, margins serrate , apex long-acuminate, surfaces glabrous. " (Webref: 3)
Flower: "Racemes 1-3 cm (6-40 cm in fruit); bracts unifoliate, obovate to spatulate, 2-15 mm. Pedicels 7-15 mm. Flowers: sepals persistent, connate ca. 1/2 of length, yellow, lanceolate, 1.6-2.6 x 0.8-1.2 mm, margins denticulate, glabrous; petals golden yellow, oblong to ovate, 10-13 x 2-4 mm; stamens yellow, 20-30 mm; anthers 1.9-2.6 mm; gynophore 15-25 mm in fruit; ovary 3-6 mm; style 0.5-0.8 mm. " (Webref: 3)
Fruit: "Capsules not inflated, 40-60 x 2-5 mm, striate. Seeds 15-30, gray to black, triangular (sharply angled), 3-4 x 2.5-3 mm, rugose." (Webref: 3)

Bloom Information

Bloom Color: Yellow
Bloom Time: Jun , Jul , Aug

Distribution

USA: AZ , CA
Native Distribution: "Arizona, California; Mexico (Baja California)." (Webref: 3).
Native Habitat: "Dry sandy flats, desert scrub, roadsides; 300-1200 m." (Webref: 3).

Growing Conditions

Water Use: Low
Light Requirement: Sun
Soil Moisture: Dry
Drought Tolerance: High
Heat Tolerant: yes
Soil Description: "Dry sandy flats, desert scrub, roadsides." (Webref: 3).

Propagation

Propagation Material: Seeds

Web Reference

Webref 3 - Flora of North America (2014) Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.

Additional resources

USDA: Find Peritoma jonesii in USDA Plants
FNA: Find Peritoma jonesii in the Flora of North America (if available)
Google: Search Google for Peritoma jonesii

Metadata

Record Modified: 2022-07-28
Research By: Joseph A. Marcus

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