UCJEPS: keys

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Up-to-date information about California vascular plants is available from the Jepson eFlora.

1. Some leaves floating, emergent, or terrestrial and generally spoon-shaped; submersed leaves linear-lanceolate or spoon-shaped

2. Pedicel in fruit 1–25 mm

2' Pedicel in fruit generally 0–0.5 mm

3. Fruit margin wing generally uniformly wide from base to tip

4. Transition from fruit wall to wing gradual; fruit 1.2–1.7 mm wide, light brown to tan, grooves deep

4' Transition from fruit wall to wing abrupt; fruit 1–1.5 mm wide, dark brown to black, grooves shallow

3' Fruit margin wing 0, only above middle, or wider above middle

5. Fruit longer than wide; fruit margin wing wider above middle

5' Fruit as wide as long; fruit margin winged only above middle or 0

6. Fruit 0.8–1.4 mm diam

6' Fruit 0.6–0.8 mm diam

1' All leaves submersed and linear-lanceolate

7. Fruit margin wing 0 or only above middle

8. Pedicel in fruit > 1 mm

8' Pedicel in fruit 0–0.5 mm

9. Fruit 0.8–1.4 mm diam

9. Fruit 0.6–0.8 mm diam

7' Fruit margin winged from base to tip

10. Flower and young fruit not subtended by bracts

10' Flower and young fruit subtended by 2 whitish, inflated bracts

11. Fruit wing uniformly wide from base to tip; fruit of equal width above and below middle

11' Fruit wing and fruit generally wider above middle