Subtribe Spiranthinae - The Pollination Biology of North American Orchids: North of Florida and Mexico - page 21

Table 2.1 Data on asexual/facultatively sexual species of Spiranthes (Sheviak and Brown 2002 )
Character

S. casei S. cernua S. magnicamporum S. ochroleuca S. odorata

Plant height (cm) 4-77 10-50 7-60 10-55 10-100+

Dorsal sepal (mm) 5.2-8 6-12 5-14 6-14 4-18

Lateral sepals (mm) 5.2-8 6-12 5-14 6-14 4-18

Lateral petals (mm) 3.9-7.6 6-12 4.9-13 4-18

Lip (mm) 4.1-8 × 3.2-5.1 6-10.5 × 2-7.5 4.9-12 × 3.3-7 7-12 × 4-7 4-16 × (4-) 7-9.5

Viscidia Linear to linear-lanceolate Linear Linear Linear to linear-lanceolate