Key to Xylorhiza

View taxon page for Xylorhiza

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

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

1. Perennial herb or subshrub; stem generally branched only in proximal 1/2; 

peduncle 

Stalk of an individual flower borne singly, not in an inflorescence, or of an entire inflorescence, or the corresponding structure in fruit; the stalk subtending an involucre (e.g., in Asteraceae, Polygonaceae).

8–25 cm ..... X. tortifolia var. tortifolia

1' Shrub; stem generally branched throughout; peduncle 0–11 cm

2. Younger stems and 

peduncles 

Stalk of an individual flower borne singly, not in an inflorescence, or of an entire inflorescence, or the corresponding structure in fruit; the stalk subtending an involucre (e.g., in Asteraceae, Polygonaceae).

short-glandular; phyllaries loosely 

appressed 

Parallel or nearly parallel to and often in contact with surface of origin; used to describe the disposition of hairs, leaves, pedicels, etc.

, outermost glandular, innermost < immediately preceding series ..... X. cognata

2' Younger stems and peduncles generally glabrous (rarely 

puberulent 

Minutely hairy.

proximal to heads); phyllaries tightly appressed, ± glabrous; innermost >= immediately preceding series ..... X. orcuttii

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Citation for the whole project: Jepson Flora Project (eds.) . Jepson eFlora, https://ucjeps.berkeley.edu/eflora/ [accessed on ]

Citation for an individual treatment: [Author of taxon treatment] [year]. [Taxon name] in Jepson Flora Project (eds.) Jepson eFlora, [URL for treatment]. Accessed on .

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