Plant Image
Flower


Yavapai County Native & Naturalized Plants

Pennellia longifolia - longleaf mock thelypody

Synonyms: Pennellia mcvaughii, Streptanthus longifolius, Thelypodium anisopetalum, T. longifolium
Other Common Names: long-leaf cross
Plant Form: Forb or Subshrub

Family: Brassicaceae


   
 
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Flowers and fruit
Max Licher @http://swbiodiversity.org, Usage Rights: Creative Commons Attribution-ShareAlike (CC BY-SA)
Leaves and plant
Arizona State University Vascular Plant Herbarium, Usage Rights: CC BY-NC (Attribution-Non-Commercial)
Plant
Max Licher @http://swbiodiversity.org, Usage Rights: Creative Commons Attribution-ShareAlike (CC BY-SA)
Forb Plant Description

Origin: Native   Life Cycle: Biennial or perennial
General Desc: Slender biennial or perennial, about 1 foot to 2-1/2 feet tall; stems simple or few from base, with star-shaped or forked hairs, or smooth; basal leaves spatual-like, sepals purple or light purple with unequal sides, petals purple to light purple.
Identification notes: Height 11 to 32 inches tall; basal leaves, spatula-like, margins toothed, absent at flowering, stem leaves narrow, without stalks; flowers on 1 side of elongated stems, purple to light purple, to 1/2 inch long; fruits droop, 2 to 4 inches long.
Height: About 1 to 2-1/2 feet


Habitat

Habitat Description: Mixed pine-oak forest, dry pine forests, limestone hills, rocky outcrops and meadows, stream banks, shaded ravines.
Plant Communities: Pinyon Juniper Woodland, Montane Conifer Forest, Riparian
Elevation: 5500 - 9500 feet


Flower Characteristics

Color: Purple to light purple     Shape: Irregular in elongated clusters     Tubular: N     Flowering Period: Jul - Sep
Description: Elongated clusters along one side, 6 to 10 inches long; sepals purplish, 1/4 inch long, smooth or hairy, somewhat unequal sides, lower sepals longer than upper sepals; petals purplish, spatula-like, slightly narrowed at base, 1/4 to 1/2 inch long.


Leaf and Stem Characteristics

Leaf Color: Green     Leaf Type: Simple     Leaf Shape: Round or oval     Leaf Margin: Toothed     Leaf Attachment: Basal and alternate     Leaves Clasp: N
Hairs: Leaves and stems     Spines: N
Leaf Description: Basal leaves spatula-like on 1 inch stems, margins strongly wavy, toothed to pinnately lobed, hairs star-shaped, absent at flowering; upper leaves narrow, stemless, smooth margins, usually hairless, up to 1/4 inch long.


Fruit and Seed Characteristics

Fruit Type: Pod
Fruit Notes: Siliques (long, narrow seedpod, splitting open when mature), straight or nearly so, 2 to 4 inches long, widely spreading and pendulous (hanging or drooping downward); partitions transparent and broad; ovules 150 to 250 per ovary.
Seed Notes: Seeds biseriate (arranged in 2 rows), plump, not winged, oblong, seed coat slimy when wet.



  Arizona Cooperative Extension
Yavapai County
840 Rodeo Dr #C
Prescott, AZ 86305
(928) 445-6590
Version 8.0  
http://cales.arizona.edu/yavapaiplants/SpeciesDetailForb.php  
Last Updated: Dec 13, 2022
Content Questions/Comments: Email Matt Halldorson  
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