Abstract
The west coast endemic, Blepharostoma arachnoideum, is so infrequently encountered that its status as a species distinct from B. trichophyllum has been held in doubt. Despite its rarity, it displays a consistent set of vegetative characters, which may be used to separate it from all forms of B. trichophyllum. Blepharostoma trichophyllum subsp. brevirete, a form that intergrades with typical subsp. trichophyllum, has often been confused with B. arachnoideum. Blepharostoma arachnoideum is presently known from only 25 sites from northwestern California to southwestern British Columbia. Mature perianths have only recently been found in B. arachnoideum and are illustrated here and compared with perianths of B. trichophyllum.
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Claims 4
Claim · model-written summary
Blepharostoma arachnoideum displays consistent vegetative characters separating it from B. trichophyllum.
- Taxon
- Blepharostoma arachnoideum
Blepharostoma arachnoideumt0 - Outcome
- consistent set of vegetative characterse1
- Comparator
- B. trichophyllume1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e1“it displays a consistent set of vegetative characters, which may be used to separate it from all forms of B. trichophyllum”
t0“Blepharostoma arachnoideum”
Claim · model-written summary
B. arachnoideum is known from 25 sites from northwestern California to southwestern British Columbia.
- Taxon
- Blepharostoma arachnoideum
Blepharostoma arachnoideume1 - Outcome
- 25 sitese1
- Setting
- northwestern California to southwestern British Columbiae1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e1“Blepharostoma arachnoideum is presently known from only 25 sites from northwestern California to southwestern British Columbia”
Claim · model-written summary
B. trichophyllum subsp. brevirete intergrades with typical subsp. trichophyllum and has been confused with B. arachnoideum.
- Taxon
- Blepharostoma trichophyllum subsp. brevireteBlepharostoma breviretee1
- Outcome
- intergrades with typical subsp. trichophyllume1
Verbatim
e1“Blepharostoma trichophyllum subsp. brevirete, a form that intergrades with typical subsp. trichophyllum, has often been confused with B. arachnoideum”
Claim · model-written summary
Mature perianths of B. arachnoideum were found and compared with those of B. trichophyllum.
- Taxon
- B. arachnoideum
Blepharostoma arachnoideume1 - Outcome
- Mature perianthse1
- Comparator
- B. trichophyllume1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e1“Mature perianths have only recently been found in B. arachnoideum and are illustrated here and compared with perianths of B. trichophyllum”