Brodiaea santarosae
The Santa Rosa Basalt Brodiaea

Tom Chester, Wayne Armstrong and Kay Madore

Distinguishing Characteristics of Brodiaea santarosae: Floral Lengths

Table 4 gives the mean values and standard deviation of the mean for the floral characteristics. Significantly-larger mean values are in bold type; significantly-smaller values are in italics; the differences here range from 4.4-10 standard deviations (P<10-5).

Six of the seven characteristics of B. filifolia and B. orcuttii were significantly-smaller than at least one of the other two species; in contrast, six of the seven characteristics of B. santarosae were significantly-larger than at least one of the other two species. Interestingly, B. terrestris ssp. kernensis had three significantly-smaller values and four significantly-larger values. In addition, the width of the anther axis tissue for B. terrestris subsp. kernensis was 0.5-0.9 mm and never became as narrow as the minimum value for each the other species of 0.2 mm.

Table 4. Floral Characteristics Mean and Standard Deviation of the Mean, in mm.

Values in boldtype indicate characteristics significantly larger than at least one other species; values in italics indicate significantly-smaller characteristics.

CharacteristicB. filifoliaB. orcuttiiB. santarosaeB. terrestris
ssp. kernensis
Perianth tube6.7 ± 0.26.1 ± 0.28.3 ± 0.210.2 ± 0.3
Perianth lobes13.5 ± 0.415.8 ± 0.420.0 ± 0.619.2 ± 0.7
Filament0.5 ± 0.15.4 ± 0.15.6 ± 0.32.7 ± 0.2
Anther4.6 ± 0.15.3 ± 0.16.8 ± 0.15.4 ± 0.2
Ovary4.5 ± 0.15.2 ± 0.26.8 ± 0.27.6 ± 0.2
Style plus stigma6.6 ± 0.29.4 ± 0.313.1 ± 0.38.1 ± 0.2
Staminodes (free portion) 2.6 ± 0.10 ± 0.03.3 ± 0.47.5 ± 0.2


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Copyright © 2007 by Tom Chester, Wayne Armstrong and Kay Madore.
http://tchester.org/plants/analysis/brodiaea/bsr/flora_lengths.html
Comments and feedback: Tom Chester
Last update: 16 October 2007