Trichostema lanatum

Trichostema lanatum Benth.
Woolly bluecurls, Romero

Family:  Lamiaceae

Habit:  Shrub 5 to 15 dm. tall, rounded, many-branched, strong-scented.  Flowers in dense, violet- to purplish, woolly, interrupted spikes.

Distribution:   Found on dry slopes, chaparral, coast ranges near the California coast from Monterey and San Benito County to Baja California.

Seed unit:   Nutlet.

Seed:   Fruit with 2 to 4 nutlets, each 2 to 4 mm. long, irregularly reticulate, minutely hirsute.  (Individual nutlets are considered the seed unit.)

Embryo:  Linear.

Purity instructions:   Pure seed definition: 
AOSA:  PSU #10 – Intact nutlet, whether or not a seed is present.  Piece of broken nutlet larger than one-half of the original size, unless no seed is present.  Seed, with or without seed coat.  Piece of broken seed, with or without seed coat, larger than one-half the original size.

Lab notes:  Seeds of this species are often deeply dormant; a TZ test may be used to determine viability of firm, ungerminated seeds.

Average pure seed units per gram:  605 seeds per gram (based on AOSA pure seed units only from 31 samples received for testing from 1999 to 2005).

Range of percent pure seed:   11 to 75%

Range of percent inert:  23 to 87%

Description of inert:   Plant material, sticks, dirt, broken seed, stone.

Planting instructions:  400 seeds, TB, 21 days @ 15°C; for fresh and dormant seed, GA3 recommended.

References:  (link to main reference page)
Hickman, J.C., Ed.  1993.  p. 732.
Munz, P.A. and D.D. Keck.  1968.  p. 693.
Ransom Seed Laboratory