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Dipsacus sativus (L.) Honck.

Indian teasel

KingdomPlantaePlants, but not fungi, lichens, or algae
SubkingdomTracheobiontaVascular plants—plants with a “circulatory system” for delivering water and nutrients
DivisionMagnoliophytaFlowering plants, also known as angiosperms
ClassMagnoliopsidaDicotyledons—plants with two initial seed leaves
SubclassAsteridaeA large class that encompasses asters
OrderDipsacalesIncludes viburnum, honeysuckle, snowberry, beautybush, twinflower, many others
FamilyDipsacaceaeTeasel family
GenusDipsacusFrom the Greek dipsa, “thirst,” from the connate (joined or attached) leaf bases that in some ssp. hold water
SpeciessativusMeans “that which is sown,” indicating the plant is a cultivated one

About plant names...

In California, this teasel species is considered invasive. It is a North American native.

Plants: 4-6′ (1.2-1.8 m) tall, rarely up to 9′ (2.7 m). Stems have prickles.

Leaves: A basal rosette of leaves

Flowers: Usually white. The involucre bracts at the base of each flowerhead spread almost straight outward, rather than bending upward. In common teasel, the bracts extend upward and even over the top of the flowerhead. The flowerhead is comprised of around 4 zillion tiny flowers. Each flower is about 1/32″ (1 mm) around, with four overlapping petals that form a rough cylinder. A stigma with two lobes extends some distance from the flower, while the stamens are inside it.

Online References:

Wildflowers of the United States

Dipsacus sativus (Indian teasel)

7/23/2017 · Scranton, Penn­syl­vania · ≈ 5 × 8″ (13 × 20 cm)

Dipsacus sativus (Indian teasel)

7/23/2017 · Scranton, Penn­syl­vania · ≈ 4 × 6″ (11 × 16 cm)

Dipsacus fullonum L. ssp. sativus (L.) Thell.

 

Dipsacus sativus description by Thomas H. Kent, last updated 7 Sep 2023.

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Dipsacus sativus (Indian teasel)

7/23/2017 · Scranton, Penn­syl­vania · ≈ 4 × 6″ (10 × 14 cm)

Dipsacus sativus (Indian teasel)

7/23/2017 · Scranton, Penn­syl­vania · ≈ 6 × 4″ (14 × 10 cm)

Dipsacus sativus (Indian teasel)

7/23/2017 · Scranton, Penn­syl­vania · ≈ 4 × 6″ (11 × 16 cm)

Dipsacus sativus (Indian teasel)

7/23/2017 · Scranton, Penn­syl­vania · ≈ 4 × 6″ (10 × 14 cm)

Range:

About this map...