- antarcti**** West & G.S.West, 1911
Nostoc apuanum De Notaris, 1869
Nostoc arctum Kützing, 1847
Nostoc arenarium Desmazières, 1865
Nostoc austinii H.C.Wood...
- pani**** Pani****
aquarum Zuloaga &
Morrone Pani**** aquati**** Poir. Pani****
arctum Swallen Pani****
arcurameum Stapf Pani****
aristellum Döll Pani**** arundinariae...
-
Jenkins & Evermann, 1889
Synonyms Bryx
arctus Jenkins & Evermann, 1889
Siphostoma arctum Jenkins & Evermann, 1889
Syngnathus independencia Hildebrand, 1946...
- -
China Helictotrichon angustum C.E.Hubb. - Kenya,
Yemen Helictotrichon arctum Cope -
Yemen Helictotrichon barbatum (Nees) Schweick. -
South Africa Helictotrichon...
- elongata.
Abundant other flora are
Scleropteris grandis,
Linguifolium arctum, L. lilleanum, L.
tenisonwoodsii and L. steinmannii,
Cycadocarpidium and...
-
minum and H.
andinum are synonyms, but also H. cerdasensis. "Hegetotherium"
arctum was
formerly ****igned to this genus, but is
clearly not a
member of Hegetotheriidae...
