-ry wL - Universitetet i Oslo

164
Graphis Scripta 2z 164-167, 1989.
LICHEN MTERIAL BY O, P, SI,.IARTZ IN THE HERMRIUM AT EOTEEORE
Lars Arvidsson, Naturhistoriska Fiusdet, Box 7281, 5-402 t5 Gbteborg'
Sweden.
Abstract: Twelve specimens from the West lndies, collected by
0.p. Swartz, have been discovered in the herbarium at Gdteborg.
The collection comprises n j.ne isotypes, v iz . Baeomyces l-g!99ides
(Sw. ) Ach., Leptogium diaphanum (Sw. ) Mont., L. marginelJ-
um (Sw.) S.F. Gray, Lobaria dissecta (Sw.) Raeuschel, Parmel-ieIJa
pannosa (Sw.) NUff. Arg., Stereocaul,on ramulosum (Sw.).
Raeuschel, Sticta damaecornis (5w. ) Ach., Sticta l,aciniata (5w. )
and S. tomentosa (Sw. ) Rcn. The material is briefly discussed.
The main part of the lichen colLection by 0.p. swartz (rz5o-t8t8),
is located. in Riksrnuseum, stockholm (s), with subord-inate maierial
in UpS. In addition, varj-ous duplicates are also for:nd in BM-ACE,
C, G, and H-ACH.
In the Botanical Museum at Gbteborg (Cf)' f have encoulltered 12
specimens which appears to be original collections by swartz from
his voya€e to the West Ind.ies and. northern South America 1784-86.
Nine of these lichens veqy 1ike1y constitute isotypes of species
d.escribed. by Swartz in ,,Nova Genera & Species Plantal:tmtr (tl8g).
The material 1s sparse, consisting of only one or two thalli of
each species, grued on old-fashioned paper. Anrrotations are in black
ink a'd. mention the ,,Lichenrr-11emsr' "J*rricatt (o" in one case 't'Dominica,,),
and ,,Dr. Swartzr' (fig. 1 ). There is some uncertainty of the
hand.-rgiting, and later scientists have made some comments on slips '
G.O. Malme says that the hand. is not unlike that of swartz, but more
neat. The titl-e of ,rDr. ,, before swart z'name also casts suspici-On On
i-ts authenticity. O. c,ertz states that the hand.-r^rriting j-s not found
in letters by swartz. The specimens are preserved in modern packets
with G3 herbarium labels. Of special interest here is an explanation
in the ha'd of A.I[. Magnusson: "From the lichen corlection of Dr-
Westring through lagnan C-J. Ergelblon, 18rr"'
It is possible that the material was given io the Natural Eistory