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Re: [SANS] problems with Sans. schweinfurthii

Dear Kirk,

As far as die back is concerned, you plant may just need to be repotted in
a larger pot with fresh soil.

As much as we have all become accustomed to the name Sansevieria
schweinfurthii Tackholm & Drar being the new name for Sansevieria
cylindrica Schweinfurth not Bojer that was listed in the end of N.E.
Brown's monograph, it turns out that the name is invalid and cannot be
used.

I have a photocopy of the publication where the name was proposed and it
lacks a Latin diagnosis and a clear citation of the name it is to replace.
According to the International Code of Botanical Nomenclature, the name is
clearly invalid. The name Sansevieria schweinfurthii Tackholm & Drar is
listed as invalid in Eggli & Taylor (1994) LIST OF NAMES OF SUCCULENT
PLANTS.

Anyway the name Sansevieria erythraeae Mattei was previously coined for the
same plant so the point is moot anyway. Sansevieria erythraeae Mattei is
accepted as the correct name for this species by Teketay (1995).

Sansevieria erythraeae Mattei, Boll. Stud. Inform. Giard. Colon. 4: 170
(1918); Teketay, Sansevieria Journ. 4 (2): 50 (1995)
syn. Sansevieria cylindrica sensu Schweinfurth, Bull. Herb. Boissier,
append. 2: 177 (1894); sensu Fiori, Boschi e Piante Legn. Eritea 105 (1913)
not Bojer (1837)
        Sansevieria schweinfurthii Tackholm & Drar, Bull. Fac. Sci., Cairo
Univ. 30: 306 (1954) comb. illegit, ICBN art. 36.1
Eritrea,?Ethiopia, ?Sudan.
Closely allied to S.cylindrica Bojer but with leaves smooth, not cross
banded and with a soft apical tip. Also S.erythraeae is reported to be
diploid while S.cylindrica is hexaploid (Menzel & Pate (1960)).

Sansevieria erythraeae 'Variegated' Chahinian
Syn. Sansevieria schweinfurthii 'Variegated' Chahinian, Cact. & Succ.
Journ. Amer. 67 (3): 181, fig. 1 (1995)

References

Brown, N.E. (1915) Sansevieria. A Monograph of All Known Species. Kew
Bulletin 1915 (5): 1-81, 23 figs.

Menzel, M.Y. & Pate, J.B. (1960) Chromosome and crossing behavior of some
species of Sansevieria. American Journal of Botany 47 (3): 230-238.

Tackholm, V. & Drar, M. (1954) FLORA OF EGYPT, Volume 3. Bulletin of the
Faculty of Science - Cairo University. no. 30. 1-644.

Teketay, D. (1995) the genus Sansevieria Thunb. in Ethiopia. A contribution
to the flora of Ethiopia. The Sansevieria Journal 4 (2): 43-58, 4 figs.

Cereusly Steve

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
•Subject: problems with Sans. schweinfurthii
•From: Kirk Pamper <Kirkpamper@AOL.COM>
•Date: Thu, 22 Jul 1999 21:42:11 EDT
------------------------------------------------------------------------
Hi Group,

For some time I've been having trouble with the leaf tips on my S.
schweinfurthii (erythraeae?) dying back, first turning yellow, then
whithering to brown.  Meanwhile, the plant still grows well, putting out
new
leaves and pups regularly.

Has anyone else had this problem?  What gives?  Any clues as to how to stop
it?

Thanks.
Kirk
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