Trillium scouleri

Apparently Secure  (NatureServe)[1]
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Order: Liliales
Family: Melanthiaceae
Genus: Trillium
Species:
T. scouleri
Binomial name
Trillium scouleri

Trillium scouleri is a species of flowering plant in the bunchflower family Melanthiaceae.[2]

Description

In both habit and flower structure, Trillium scouleri closely resembles Trillium ovatum. To distinguish the two species, the only reliable characters are the lengths of the filaments and anthers. In absolute terms, the filaments and anthers of T. scouleri are almost always longer than the corresponding characters in T. ovatum. The minimum, average, and maximum lengths of the filaments and anthers of each species is as follows:[3]: 395 

Character length (mm)
Filaments Anthers
MinAveMaxMinAveMax
T. scouleri56.49810.815
T. ovatum44.4556.47

The relative lengths of the filaments and anthers are also significant. In T. ovatum, the length of the filaments is equal to (or slightly less than) the length of anthers. In T. scouleri, the length of the filaments is one-half to two-thirds the length of the anthers.[3]: 389 

Taxonomy

Trillium scouleri was described by Henry A. Gleason in 1906.[3]: 394  For many decades the species was assumed to be a part of Trillium ovatum Pursh, but more recently T. scouleri has been shown to be a distinct species based on molecular work.[1]

References

  1. 1 2 "Trillium scouleri". NatureServe Explorer. NatureServe. Retrieved 7 December 2021.
  2. ↑ "Trillium scouleri Rydb. ex Gleason". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 7 December 2021.
  3. 1 2 3 Gleason, Henry Allan (July 1906). "The pedunculate species of Trillium". Bulletin of the Torrey Botanical Club. 33 (7): 387–396. doi:10.2307/2478819. hdl:2027/hvd.32044106472392. JSTOR 2478819. Retrieved 8 December 2021.
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