Herposiphonia bipinnata M.Howe

• Region

  West Indies

• Country

  Bahamas

• State/Province

  Berry Islands

• Locality

  Whale Cay, washed ashore

• Coordinates

  25.4148, -77.778

• Coordinate Uncertainty (m)

  3921.57

• Georeferencing Method

  Georeferencing Quick Reference Guide, Version 2012. Located coordinates of geogr. center of Whale Cay. Since it was not on land, found closest coordinates to that point on Whale Cay. Measured from coordinates to farthest extent of Whale Cay to find linear extent (3910 m). Input information into MaNIS Georef. Calc. to find uncertainty radius (Bounded Area).

• Geodetic Datum

  WGS84

• Distribution

  Map all specimens of this taxon

AWlSiXL.

4. Herposiphonia bipinnata M. A. Howe, sp. now

Frond rose-purple, filiculoid or ilocculose, free, or subrepent at base only,
somewhat bi-tri-pinnate, or paniculate 2-5 cm. long, the branchlets here and
there obviously pectinate-secund; main axes stramineous or decolorate except
in youngest parts, 150-250 /j. in diameter, somewhat swollen at the nodes, the
segments lV>-2 times as long as broad, becoming subequal towards apices; peri-
central cells usually 10, the central cell large, 50-80 /x in diameter; branches
obscurely quadrifarious, or subsecund through the abortion of the usually fre-
quent lateral long branches, commonly arising from two immediately consecu-
tive nodes, one from each, followed by one or two naked nodes, and then by two
branches from immediately consecutive nodes, and* so on, the branches being
sometimes represented by rudiments; long branches abruptly diminishing in
size at apex and rather inconspicuously dorsiflexed; short branches 8—12 seg-
ments long, slightly flexed or subfalcate. crowned with rather coarse tricho-
blasts, often as long as the branch, the segments Vj-1% as long as broad;
sporangia somewhat protuberant, mostly in a single linear series, the sporau-
giiferous branch 105—135,u in greatest width; cystocarps ovoid, short-stalked,
subtruncate, 3SO-540 |U X 300-450 fj..	c-J'

In technical microscopic characters, the present species seems to be related
to II. secunda, from which, however, it is amply distinct, as indicated in the
above key.

On Cymodooea, washed ashore, Whale Cay, Berry Islands {Howe —type).

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