|University of California, Berkeley|
|Jepson eFlora: Taxon page
Key to families | Table of families and genera
Index to accepted names and synonyms:
| A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
|Family: Asteraceae (Compositae)||View Description||Dichotomous Key|
|Genus: Petradoria||View Description||Dichotomous Key|
|Species:||View Description||Dichotomous Key|
Petradoria pumila (Nutt.) Greene var. pumila
Habit: Perennial herb (subshrub) < 3 dm, glabrous (hairy), taprooted from branched, woody base. Stem: several, erect, striate, gummy, green, white to tan in age. Leaf: alternate, 2--12 cm, 1--12 mm wide, linear to (ob)lanceolate, leathery, resin-dotted, entire, 3--5-veined, margins scabrous. Inflorescence: heads radiate, many, in dense, flat-topped clusters; involucre < 10 mm, < 3 mm diam, cylindric; phyllaries 10--21, graduated in 3--6 series, oblong to ovate, light yellow, tips green; receptacle convex, pitted, sometimes with 1--3 scales or awn-like appendages <= 1 mm, epaleate. Ray Flower: (1)2--3; ray 2.5--4.5 mm, yellow. Disk Flower: 2--4, staminate; corolla 4.5--6.2 mm, yellow, lobes 0.8--1.3 mm; anther tip +- lanceolate; style tips awl-shaped. Fruit: 4--5 mm, 6--9-veined, slightly compressed, glabrous; pappus bristles thread-like, tan to +- brown. Chromosomes: 2n=18.
Ecology: Rocky soils, pine forest, juniper scrub, often on limestone; Elevation: 1050--3400 m. Bioregional Distribution: DMtns; Distribution Outside California: to Idaho, Wyoming, New Mexico. Flowering Time: Jul--Oct Note: Other variety in Arizona, New Mexico, Utah.
Synonyms: Petradoria pumila subsp. pumila
eFlora Treatment Author: Lowell E. Urbatsch & Meredith A. Lane
Jepson Online Interchange
Listed on CNPS Rare Plant Inventory
Previous taxon: Petradoria
Next taxon: Peucephyllum
Citation for this treatment: Lowell E. Urbatsch & Meredith A. Lane 2016. Petradoria pumila var. pumila, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=75262, accessed on May 29, 2016.
Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on May 29, 2016.