Bot. Beechey Voy.,139. 1832
Calif., nw Mexico.
Species 2 (2 in the flora).
Adenostoma is a Madro-Tertiary derivative of a lineage with compound leaves. Seedlings and sucker shoots have 1–2-pinnatifid leaves; mature leaves are simple, undivided. Both species occur in chaparral and resprout after fires from basal lignotubers. The single achenes are derived from ancestral 5-follicled fruits, each carpel retaining the ancestral marginal style. Stamens are arranged in groups of 2 to 3 alternate with petals; filaments expand sequentially, first 5 (1 opposite each sepal), followed by the second 5 and third 5 (when 15).
|1||Leaves crowded on short shoots, blades dark green, adaxial surfaces glabrous; stipules present on long-shoot leaves; subtending flower bracts 3-lobed, medial lobe largest; bracteoles 2, subulate; stamens (10–)15.||Adenostoma fasciculatum|
|1||Leaves on slender long shoots (short-shoot fascicles absent), blades yellow-green, adaxial surfaces sparsely hirtellous and sessile-glandular; stipules absent; subtending flower bracts linear-subulate; bracteoles 5 or 6, outermost subulate, inner oblong-obovate; stamens 10(–12).||Adenostoma sparsifolium|
|Author||William Jones + and James Henrickson +|
|Common name||Chamise +|
|Etymology||Greek a den, gland, and stoma, mouth, alluding to gland at rim of hypanthium +|
|Illustrator||Marjorie C. Leggitt +|
|Taxon name||Adenostoma +|
|Taxon parent||Rosaceae tribe Sorbarieae +|
|Taxon rank||genus +|
|Volume||Volume 9 +|