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Compositae: Helianthus nuttallii ssp. parishii

Unkown Collector, 547.14

Species

Helianthus nuttallii Torr. & A.Gray ssp. parishii (Gray) Heiser

Original Distribution

US, California, Los Angeles-, Orange and San Bernadino Counties

Habitat

Wet meadows, marshes, shores, stream banks, ditches and other wet places

Extinction Data

IUCN = N/a, Listed Extinct by WCMC 1996

Description

Smaller in stature, 0.4-2 m tall; stem glabrous or sometimes hispid in the middle and lower portions, strigose in the inflorescence. Leaf blades narrowly lanceolate to lanceolate or ovate-lanceolate to elliptic, 4-15(20) cm long, 0.8-4.5 cm wide, entire to shallowly toothed, cuneate to rounded at the base; petioles 0.5-2(4) cm long. Jul--Sep. . Perennial, 50-400 cm tall, from clustered tuber-like roots; rhizome short. Stems glabrous to tometous. Leaves alternate to opposite, subsessile,; blade 10-20 cm, narrowly lancelate to ovate, acute to acuminate, entire to serrate, rough hairy to densely tometose above, + finely tometose below. Inflorence heads, few-many; peduncles 1-8 cm, tomentous; involucre 1-2 cm diameter, phyllaries + erect, 8-16 mm, generally smaller than 3 mm wide, , + linear or slightly bigger then the disk, tomentous; chaff scales 8-12 mm, entire or 3-thoothed, acute, shortly rough hairy. Ray flowers 12-20; ligules 15-20 mm. Disk flowers: corollas, 5-6 mm. Lobes yellow. Fruit 3-4 mm; pappus scales, 3-4 mm (sometimes with shorter scales.).  Last seen 1937. Growing in the coastal salt and freshwater marches and swamps below 500 m altitude.

Number of Specimens at Kew

1

Specimen Type (Y/N)

N

Kew Herbcat Barcode Number

K000518053

Collector Number

547.14

Date Collected

9th Oct 1916

Other Information

Lost Angeles Sunflower. Two phases of H. nuttallii are encountered in the US region. H. nuttallii subsp. rydbergii (Britt.) Long is most common, with mostly opposite, ovate-lanceolate to lanceolate or elliptic leaves, acute to obtuse at the tip. The other phase is subsp. nuttallii, with mostly alternate, linear-lanceolate to narrowly lanceolate leaves, acute to acuminate at the tip

Information Sources

Ayensu, E.S. and DeFilipps, R. A. (1978). Endangered and threatened plants of the united states. Smithsonian institution and World Wildlife fund. pp 205 Hickman, J.C. (ed.) (1993) The Jepson Manual, Higher plants of California. University of California Press. Berkeley. Pp 280. Mohlenbrock, R.H. (uncorrected proof) Where have all the wildflowers gone. Macmillan Publishing, New York. Smith, J.P. & Berg, K. (1988). Inventory of rare and endangered vascular plants of California. California Native Plant Society, Sacramento. Pp. 61. Walter, K.S. and Gillett, H.J. (eds) (1998). 1997 IUCN Red List of Threatened Plants. Compiled by the World Conservation Monitoring Centre IUCN The World Conservation Union, Gland, Switzerland and Cambridge, UK.