Dig deeper at SERNEC, a consortium of southeastern herbaria.
Learn more about Cystopteris from the Vascular Plants of North Carolina.
Monilophytes (ferns): Leptosporangiate Ferns (true ferns): Polypodiales
WEAKLEY'S FLORA (5/21/15):
Cystopteris protrusa
FAMILY
Cystopteridaceae
SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Cystopteris protrusa
FAMILY
Dryopteridaceae
SYNONYMOUS WITH
VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 011-03-001:
Cystopteris protrusa
FAMILY
Aspidiaceae
SYNONYMOUS WITH
Manual of the Southeastern Flora (Small, 1933)
Cystopteris fragilis var. protrusa
COMMON NAME:
Lowland Bladder Fern, Spreading Bladder Fern
Click or hover over the thumbnails to see larger pictures.
Emily B. Sessa ebs_cprotrusa7882
April
Lower pinnules (near rachis) on lower pinnae have small stalks, per Peterson Field Guide to Ferns of Northeastern and Central North America.
Emily B. Sessa ebs_cprotrusa7888
April
Long-creeping rhizome extends forward past emerging fronds (thus protrusa), per Peterson Field Guide to Ferns of Northeastern and Central North America.
JK Marlow jkm070407_074
April McCormick County SC
Stevens Creek Heritage Preserve
Gently explore the soil below outermost emergent fronds to feel rhizome tip, per Peterson Field Guide to Ferns of Northeastern and Central North America.
JK Marlow jkm140418_291
April Sevier County TN
Great Smoky Mountains National Park
Habit of growing in soil not on rocks helps distinguish it from similar spp, per Peterson Field Guide to Ferns of Northeastern and Central North America.
JK Marlow jkm0505m_06
May Haywood County NC
Corneille Bryan Native Garden
For many years this was considered the same species as C. fragilis, per Field Guide to the Ferns and Other Pteridophytes of Georgia.
JK Marlow jkm160516_760
May Haywood County NC
Corneille Bryan Native Garden
Blade lanceolate, tips pointed, widest just below middle; ~ dissected, per Peterson Field Guide to Ferns of Northeastern and Central North America.
Emily B. Sessa ebs_cprotrusa0917
June
Sori roundish, astride veins, submarginal, per Field Guide to the Ferns and Other Pteridophytes of Georgia.