Jepson eFlora: Key page
Vascular Plants of California
Key to families | Table of families and genera
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Key to Trichostema

View taxon page for Trichostema

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

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

1. Shrub, < 1.5 m

2. Corolla tube 9–14 mm; inflorescence hairs 2–3 mm, obscuring  ..... T. lanatum

2' Corolla tube 4–7 mm; inflorescence hairs 1–2 mm, not obscuring pedicel ..... T. parishii

1' Annual, < 1 m

3. Petiole distinct, 5–15 mm

4. Corolla tube 4–8 mm, , lower lip 4–7 mm ..... T. laxum

4' Corolla tube 1.5–3 mm, , lower lip 2–3 mm ..... T. simulatum

3' Petiole indistinct or < 5 mm

5. Corolla tube curved abruptly upward near throatstamens 5–20 mm

6. Stamens 5–9 mm ..... T. ruygtii

6' Stamens 11–20 mm

7. Leaf  2–7 cm,  to narrowly , length > 3 × width; corolla tube 5–10 mm ..... T. lanceolatum

7' Leaf blade 1–2 cm, ovate, length < 2 × width; corolla tube 2.5–5.5 mm ..... T. ovatum

5' Corolla tube curved gradually upward; stamens 2–6 mm

8. Stem hairs curled to ; stamens 2–3 mm, ± included to ± exserted ..... T. micranthum

8' Stem, leaf hairs straight, generally ; stamens 3–6 mm, exserted

9. Calyx  < 2 × tube; calyx tube > mature nutlets; mature calyx generally red-tinged ..... T. rubisepalum

9' Calyx lobes > 2 × tube; calyx tube < mature nutlets; mature calyx green

10. Leaf blade widely , length generally < 4 × width; calyx lobes generally widest above base ..... T. oblongum

10' Leaf blade elliptic, length generally > 4 × width; calyx lobes widest at base ..... T. austromontanum

11. Leaf <=  above ..... subsp. austromontanum

11' Leaf >> internode above ..... subsp. compactum

 

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Citation for the whole project: Jepson Flora Project (eds.) . Jepson eFlora, http://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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