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2. Spiranthes Richard.  Laptes’ Tresszs. 
Anther 1, persistent, not connate with the 
column; pollinia 2, attached to the common 
gland. Perigonium oblique; labellum en- 
closed, canaliculate, embracing with its base 
the short column.—2. Flowers forming a 
spiral spike. 
1. §. ROMANZOFFIANA Cham. Callosities of 
the lip smooth, obscure; flowers greenish- 
white.—Presidio. Marin County. Autumn. 
2. §. porrirouia Lindl. Callosities of the 
lip prominent, pointing downward; flowers 
greenish-white.—Marin County. Autumn. 
3. Habenaria Willd. 
Anther 1, persistent, entirely connate with 
the column; pollinia 2, divergent at the lower 
end. Perigonium ringent, galeate ; lip elon- 
gate, spreading, calcarate. Column short.— 
2f. Caulescent. 
l. H. Execans Bolander. Sepals 1-nerved; 
flowers green. — Oakland hills. San Mateo. 
San Francisco [extinct]. Summer. 
2. H, LEUCOSTACHYS Watson. Sepals 
8-nerved ; flowers white. —Saucelito. San 
Francisco [extinct]. Summer. 
4, Corallorhiza Haller. CoRAL-ROOT. 
Anther 1, terminal, caducous, not adnate to 
to the column; pollinia 4, globose. Perigonium 
