Key to Stachys

View taxon page for Stachys

(For a list of species in Stachys, use the above link.)

Jepson Manual glossary definitions can be seen by moving your cursor over words underlined with dots.

1. Corolla tube > 15 mm ..... S. chamissonis

1' Corolla tube < 15 mm

2. Internal ring of hairs perpendicular to corolla tube; corolla not pouched toward base on lower side ..... S. bullata

2' Internal ring of hairs 

oblique 

Having unequal sides or an asymmetric base.

to corolla tube; corolla pouched toward base on lower side

3. Hairs densely silky-silvery, woolly; Del Norte Co. ..... S. bergii

3' Hairs soft, stiff, or glandular, never silky-silvery; widespread

4. Upper corolla lip < 2 mm; stamens ± 

exserted 

Protruding out of surrounding structure(s) (e.g., stamens exserted from corolla).

from corolla tube ..... S. stricta

4' Upper corolla lip > 2 mm; stamens clearly exserted from corolla tube

5. Calyx 

lobes 

1. A major expansion or bulge, such as on the margin of a leaf, sepal, or petal, or on the surface of an ovary. 2. The free tips of otherwise fused structures, such as sepals or petals; larger than teeth.

 

lanceolate 

Narrowly elongate, widest in the basal half, often tapered to an acute tip.

, ± = tube; proximal leaves short-petioled to 

sessile 

Without a petiole, peduncle, pedicel, or other kind of stalk.

; MP ..... S. pilosa

5' Calyx lobes generally deltoid or triangular, shorter than tube; proximal leaves generally long-petioled; widespread

6. Plant with abundant cobwebby, tangled hairs, herbage generally felty ..... S. albens

6' Plant lacking cobwebby, tangled hairs, herbage not felty

7. Mature inflorescence compact, generally only 2 lowest bracts visible ..... S. pycnantha

7' Mature inflorescence elongated, many bracts visible

8. Leaf 

blade 

Expanded portion of a leaf, petal, or other structure, generally flat but sometimes rolled, cylindric, wavy, or cupped.

narrowed, silky hairy, base wedge-shaped; corolla white (± pink) ..... S. ajugoides

8' Leaf blade broader, never silky, base rounded, 

truncate 

Abruptly (not gradually) narrower or smaller at base or tip, as if cut straight across or nearly so.

, or 

cordate 

Heart-shaped; often pertaining to a leaf in which the blade base on both sides of the petiole is rounded and convex.

; corolla pink or darker (white)

9. Stem, herbage densely glandular, resinous; lower corolla lip 6–10 mm wide ..... S. stebbinsii

9' Stem, herbage ± glandular, not resinous; lower corolla lip 4–6 mm wide

10. Corolla magenta to purple; bracts gradually reduced distally on stem; NW, ScV, SnFrB ..... S. mexicana

10' Corolla pink, bracts rapidly reduced distally on stem; widespread ..... S. rigida

11. Plant generally < 1 m; 

leaf 

Organ arising from a stem, generally composed of a stalk (petiole) and a flat, expanded, green, photosynthetic area (blade); distinguished from a leaflet by the presence in its axil of a bud, branch, thorn, or flower; sometimes with lateral, basal appendages (stipules); either simple (toothed, lobed, or dissected but not divided into leaflets) or compound (divided into leaflets).

base cordate, blade 

ovate 

Egg-shaped (i.e., widest below the middle) in two dimensions (i.e., in one plane), as a leaf.

..... var. quercetorum

11' Plant generally 1 m; leaf base rounded (cordate), blade lanceolate to 

oblong 

Longer than wide, with nearly parallel sides; wider than linear.

..... var. rigida

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