Taenioma perpusillum (J.Agardh) J.Agardh

• Region

  West Indies

• Country

  Puerto Rico

• Locality

  Point Borinquen, near Aguadilla

• Coordinates

  18.4777, -67.1635

• Coordinate Uncertainty (m)

  2471.57

• Georeferencing Method

  Georeferencing Quick Reference Guide, Version 2012. Located coordinates of geogr. center of Punta Borinquen. Measured from coord. to farthest extent of the point to find linear ext. (2460 m). Used MaNIS Georef. Calculator to find uncertainty (Bounded Area).

• Geodetic Datum

  WGS84

• Distribution

  Map all specimens of this taxon

Bull. Torrey Club
Volume 37, plate 9
Bull. Torrey Club
Volume 37, plate 10
E.I.T. Del,
THOMPSON: MORPHOLOGY OF TAENIOMA
EM.TUd.	14
THOMPSON : MORPHOLOGY OF TAENIOMA
* [Editorial note.—From a study of Thuret’s description and figures of his Taeni-
oma macrourum, based on Schousboe’s plant from Tangier, Morocco (Polysiphonia mac-
roura Schousb. in herb.), Miss Thompson seems to be justified in identifying at least
the Bahamian plant with this species. But the question still remains as to the identity
of this T. macrourum with the previously described Taeniomaperfmsillum of J. Agardh,
based on material collected on the Pacific coast of Mexico. Thuret had not seen
Agardb’s specimen, but in proposing Schousboe’s as a different species, he was in-
fluenced by the widely separated stations of the two plants, by some apparent differ-
ences in size and color, judging from Agardh’s description, and by Agardh’s alleged
silence as to the apical division of the stichidium and the elongation of its divisions-
into two hyaline hairs. Agardh, however, does state that the stichidia are often ex-
current at the apex “in fila minuta 3.” I have had the opportunity of comparing
Agardh’s original specimen of Taenioma perpusillum (Polysiphonia perpusilla J. Ag.
Gfv. Kongl. Vet.-Akad. Forh. 4 : 16. 1847), in the Agardh herbarium at Lund,
with my specimen from Porto Rico (Aguadilla, June 15, 1902, no. 2433} and find them
essentially the same except that the terminal hairs are much longer and more luxuriant
.in the Porto Rican plant. In the original T. perpusillum the stichidia often terminate
in three short hairs, as described by Agardh. . My Bahamian specimens (West Caicos,
December 20, 1907, no. J708) differ in several respects from the Porto Rican, as in-
dicated above by Miss Thompson. However, they are mostly sterile and they were
found growing in an inland pond or lake, having, evidently, a subterranean communi-
cation with the sea —> a place where several marine algae of recognizable species were
more or less abn ormal and peculiar. The color of these specimens when dry is reddish
purple instead of the sordid green attributed to T. macrourum by Thuret and the ter-
minal hairs ( always, apparently, in twos) are commonly shorter than in the figures pub-
lished by Bornet & Thuret and by Falkenberg, though often longer, than any figured by
Miss Thompson. In the Porto Rican specimens, the terminal hairs, which are nearly
always in threes, though rarely in twos, are fully as long and as well developed as those
figured by Bornet & Thuret and by Falkenberg for T. macrourum, though one, perhaps,
might not infer this to be the fact, from the figures drawn by Miss. Thompson. The
Porto Rican plants, by the way, were growing where they were well exposed to the
surge of the open sea. From the evidence thus far available I am inclined to agree with
Barnet (Mem. Soc. Nat. Sci. Cherbourg 28 : 297. 1892), with Heydrich (Hedwigia
33 : 395« 1894}» and with pe-Tcrni ;(Syll©ge Algarum 4 ; 732. iqoq) in considering
Taenioma macrourum (Schousb.) Thuret a synonym of Taenioma perpusillum J. Ag.
M. A. H.]
I From the Bulletin of thb Torrey Botanical Club, 37: 97-105, pis g, 10. 1910. !
-*y-,/?yL±
.....& <
t _? { *
/
r*Nt
/	fltu
NEW YORK BOTANICAL GARDEN
NEW YORK BOTANICAL GARDEN
NORTH AMERICAN MARINE ALQAE *
Collected at Point Borinquen, near Aquadilla. Porto Rico,
BY MARSHALL A. HOWE
02267677
33
.11 m*	1903.
02267677