Santolina orocarpetana sp. nov. (Asteraceae: Anthemideae), a new species from the Iberian Peninsula. Revision of the lectotype of S. oblongifolia Boiss.
Author
Rivero-Guerra, Aixa O.
Universidad de Sevilla, Facultad de Biología, Departamento de Biología Vegetal y Ecología, avda. Reina Mercedes, E- 41012 Sevilla (Spain) & Centro de Investigação en Biodiversidade e Recursos Genéticos, Campus Agrario de Vairão, rua Padre Armando Quintas-Crasto, 4485 - 661 Vairão (Portugal)
rivero-guerra@hotmail.com
text
Adansonia
2012
3
2012-06-30
34
1
133
154
http://dx.doi.org/10.5252/a2012n1a16
journal article
10.5252/a2012n1a16
6bc8f93f-8227-4361-9bef-0976c7102fe7
1639-4798
5205801
1.
Santolina oblongifolia
Boiss.
Diagnoses plantarum orientalium novarum
.
Ser. II
(3, 3), fasc. (1-6): 18 (1856)
.
—
Type (as given in protologue): “In Hispania loco non notato (Herb. Pavon)”. —
Lectotype
(designated by
Sánchez-Mata
et al.
[1994]
):
Hispania
,
Pavon
s.n.
(
Fig. 1
[
G
]).
REMARKS
The
lectotype
shows two large flowering stems and a single sterile stem. The flowering stems are either not widened at the tip or only slightly widened.The widening observed on one of the stems appears to result from dessication or flattening of this stem. The leaves of the flowering stems are narrowly spatulate. As in the population that lives at high altitude, all the leaves of the sterile stems of the type are broadly spatulate. The capitula are very poorly preserved and the bracts were damaged during dissection by botanists. It is thus impossible to know how many external bracts were originally present. The morphological characteristics listed in
Table 2
are essential to determine hybrid characters in
Santolina
’s populations, however the poorly preserved capitula did not allow a complete examination of Boissier’s original material. Therefore, it is not possible to determine if the
lectotype
of
S. oblongifolia
has hybrid characteristics or not. However, the morphological characteristics of this sample in the G-BOISS herbarium suggests that it was probably collected at an altitude below
1800 m
in a mixed population including
S. oblongifolia
,
S
.
rosmarinifolia
subsp.
rosmarinifolia
and their putative hybrids.
Rivas Goday (1955)
considered that probably Pavon collected the original material of
S. oblongifolia
in locations close to Casatejada (Cáceres). Casatejada is located south of Central System, at not more than
300 m
, outside the altitudinal range of this taxon. The present evaluation of the original material of
S. oblongifolia
suggests that the
lectotype
does not match with the current use of the name.