Brodiaeas At SRP 15 June 06
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Brodiaeas at the Santa Rosa Plateau 15 June 2006

Brodiaea santarosae: A New Species

This species was previously confused with B. filifolia and B. orcuttii.

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The following images show brodiaea flowers that superficially resemble an oversized B. orcuttii, except they have longer filaments & styles. They also have slender, erect or spreading staminodes.

Brodiaea santarosae and pollinator flower bee (Megachilidae).

Photographing Type Specimen Of Brodiaea santarosae On Santa Rosa Plateau

Bob Allen photographing type specimen (holotype).

These flowers came from separate scapes arising from the same corm. The left flower has no visible staminodes, while the right flower has slender, erect staminodes. This is the type specimen for Brodiaea santarosae collected on the Santa Rosa Plateau 15 June 2006:

Type: USA, California, Riverside County, Santa Ana Mountains, Santa Rosa Plateau region: Clay Hill, 0.55 km south-southwest of the northernmost high point of the Mesa de Burro; 33.52927 degrees North, 117.24857 degrees West [NAD27]; 580 m elevation; 15 June 2006, T Chester, W. Armstrong K. Madore 927 (holotype UCR; isotypes RSA, SD).

Mounted Herbarium Specimen & RSA Herbarium

Collection Number:  1298       Family:  LEMNACEAE
Sci. Name:  Wolffia globosa (Roxb.) Hartog & Plas
Common Name:  Watermeal       Herb    Shrub    Vine    Tree   
County & State:  San Diego County, California, USA
General Location:  San Dieguito River, pond at base of Lake Hodges Dam Spillway
GPS Location:  33 Deg. 2 Min. North, 117 Deg. 8 Min. West
Plant Community:  Freshwater Marsh       Elevation:  76 m
Date:  29 Jan. 1989       Collector:  W.P. Armstrong
Notes:  Abundant. Mixed with Azolla filiculoides & Lemna minuta; during the previous
summer (1988), pond contained mostly Wolffia columbiana mixed with a few individuals
of W. borealis; plants of W. globosa are smaller (0.5 - 0.8 mm) and more cylindrical than
W. columbiana. [Based differences in size and shape, W. globosa can be distinguished
from W. columbiana using hydrated herbarium specimens.]

Wolffia herbarium sheet: A. Mass of plant bodies pressed and dried on drying paper and slipped into 6 1/2 x 9 inch plastic sheath. The wolffia adhere to blotter paper without glue and can easily be removed for study, preferably hydrated in water. B. Standard 11 1/2 x 16 1/2 inch herbarium sheet with 7 x 10 inch manila envelope glued to lower right corner. Plastic sheath goes inside this envelope. ID label (see previous image) is glued to the envelope.

Research in the herbarium of Rancho Santa Ana Botanic Garden in Claremont, California. Type specimens placed in color-coded manila folders.

This flower was photographed along the Vernal Pool Trail on Mesa de Colorado. Note the long filaments and slender, erect staminodes.

The total perianth is about 33 mm long.

Lateral view of flower: Anther length = 7 mm; filament length = 6 mm; style length = 12 mm; staminode length = 3 mm; overall length of perianth = 30 mm.

 B. orcuttii x B. filifolia Hybrid in San Marcos 

Brodiaea terrestris ssp. kernensis

This species has rectangular, flattened-inrolled staminodes.

Above two images were taken along the Vernal Pool Trail on Mesa de Colorado.

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