Centromadia parryi (Greene) Greene

ssp. australis (D.D. Keck) B.G. Baldwin

 

=Hemizonia parryi E. Greene

ssp. australis Keck

 

=Hemizonia australis

 

Asteraceae (Sunflower Family

 

Native

Southern Spikeweed

Tarplant

                                  April Photo

 

Plant Characteristics:  Annual herb; stem erect, the central leader of medium length and with lax divaricate branches, the twiggery above dense; herbage dark green; lvs. and bracts densely glandular-puberulent and villous; peduncular bracts not exceeding the invol.; heads small; phyllaries 4-4.5 mm. long; ray-fls. often fading saffron; anthers black; receptacular bracts subtending each disk-fl. free, persistent, fleshy at tip, not long villous; pappus-paleae 3-5.

 

Habitat:  Lowlands near the coast; V. Grassland; Santa Barbara Co. to n. L. Calif.  Below 200 m. June-Sept.

 

Name:  Greek, hemi, half, and zone, girdle, the phyllaries but half-enclosing the ray-aks.  (Munz, Flora So. Calif. 184).  Australis, southern.  (Bailey 11).

 

General:  Occasional in the study area.  Specimens were photographed in the Santa Ana Heights Flats.        Hemizonia australis has a status of L4 on the California Native Plant Society Inventory of Rare and Vascular Plants of California.  (Roberts 53).  An L1 ranking is most endangered and L4 is the least.  (my comment).       The Nov.-Dec. 2000 California Native Plant Society Newsletter referenced a change in the genus name of H. parryi ssp. australis to Centromadia parryi ssp. australis.  The revision was from Dr. Bruce Baldwin’s taxonomic revisions in the genus Hemizonia.  http://ucjeps.berkeley.edu/tarweeds.html. 

 

Text Ref:  Hickman, Ed. 283, 1329; Munz, Calif. Flora 1121; Munz, Flora So. Calif. 185;  Roberts 12.

Photo Ref:  March-April 1 83 # 19,20; June 3 83 # 24,E; March 5-April 1 85 # 21.

Identity: by F. Roberts.

First Found:  April 1983.

 

Computer Ref: Plant Data 153

Have plant specimen.

Last edit 7/30/05.  

 

                                June Photo                                                                      April Photo