Etymology: |
Named in honor of Southern California Botanist, Taxonomist, and Professor of Botany at SDSU, Michael G. Simpson (1953- ) |
Description: |
Erect annual, ~7 dm high, branched, side branches weak. Leaf blades petiolate, narrowly lanceolate, ~ 2 cm long by ≤ 1 cm wide, base cuneate and apex acute, rarely lobed, entire. Upper blades narrowly elliptic, ~2 cm long by ~ .4 cm wide, apex and base acute. Inflorescences are terminal and axillary panicles of glomerate spikes, ~ 25 cm. with sessile flowers ca. 1 mm in diameter. Fruits oblate to occ conical ≤ 1.2 mm by ~ .6 mm wide, with round or occ acute equatorial margin. Pericarp adherent, thick, brown with a pattern of alternating faint reddish or yellow lines, from the center to the margin. Pericarp starts with lines that become faint as it ages. |
Distribution: |
California: Los Angeles, Riverside, San Bernardino, and San Diego counties. |
Synonyms: |
None. |
Type: |
Sanders 14159, 31 July 1993 (UCR-132956) |
Website Info: |
We thank all the Herbaria who have very generously have allowed us to display their images.
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Distribution of examined specimens:
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Exemplar specimens:
SDSU 26515
Benet-Pierce 999
SDSU 25434
Benet-Pierce 943
SDSU 26434
Benet-Pierce 981
SDSU 26429
Benet-Pierce 976
SDSU 26443
Benet-Pierce 991
SDSU 26475
Benet-Pierce 1025
SDSU 26450 Benet-Pierce 998 |
SD 156375 UCR 156331 |
Benet-Pierce 539 |
Benet-Pierce 541 |
SDSU 23066 | SDSU 23073 |
SDSU 23076 |
SDSU 23079 |
DS 83954 (Right Only) |
SDSU 22997 Benet-Pierce 887 |
SDSU 23070 Benet-Pierce 898 |
SDSU 23090 Benet-Pierce 918 |
SDSU 25195 Jellen 101219-5 A |
SDSU 25429 Benet-Pierce 942 |
SDSU 26431 Benet-Pierce 978 |
SDSU 26474 Benet-Pierce 1024 |
SDSU 26495 Benet-Pierce 1047 |