Cassiinae pt 1 NY-Botanical_gardens_Vol. 35_1 - Copy.pdf - Antbase

1982] CASSIINAE—SENNA 315
Pubescence and fls of var. cumingu, but the hts all relatively short and broad,
as described in key, the secondary venularion ofthe upper face commonly prominulous.—Collections:
4.
Rock outcrops on the coastal plain and stony beds of quebradas in the foothiUs
of the Coastal CordiUera between ±25° and 25°30'S in s. Antofagasta, Chile.—
Fl. X-XII.
The var. eremobia owes its individuality of facies solely to its condensed and
diminished fohage, for the flowers and pods are identical to those of var. cumingii,
which reaches its northern known hmit in the same latitudes, at the mouth of
Taltal river. The modification of leaves appears a slight and easy step, for occasional
axillary branchlets of otherwise typical var. cumingii (cf. Bridges 1295,
BM) bear leaves of the same compressed type and leaflets of some upper vigorous
leaves of the widely distributed Werdermann 844 are plainly transitional in out­
line.
98c. Senna cumingii (Hooker & Arnott) var. alcaparra (Philippi) Irwin & Barneby,
stat. nov. Cassia alcaparra Philippi, Linnaea 33(1): 61. 1864.—"Prope
Illapel [prov. Coquimbo near 3r35'S] frequens . . . AttuUt orn. Land-
beck."—Holotypus to be sought at SGO. Spms coUected at Illapel by
Philippi himself in XII. 1862 (fB = F Neg. 1651, MA, NY, W!) serve
as standards for comparison but are not typi.—Overlooked by Bentham,
1871.
Cassia cumingii var. ^ Hooker & Arnott, Bot. Miscell. 3(2): 211, 1829.—"Alcapassa, south o
Coquimbo, Mr. Cruckshanks."—Spm. authent., P, K!—Referred by Bentham, 1871, p. 541
to C. coquimbensis.
Intermediate between vars. cumingii and coquimbensis in width of lfts (as
described in key) and in style-length, like the former in sepals, pod and seed,
only the petals sometimes longer, the longest 11-16 mm.—Collections: 6.
Habitat not recorded, presumably similar to that ofthe next following, vicariant
immediately n.-ward, apparently local in the Coastal Cordillera, known certainly
only from depto. Illapel (Salamanca, Illapel) near 31-32° in Coquimbo, Chile.—
Fl. X-XII(-?).
The alternative identifications of Cruckshanks's collection of var. alcaparra,
first by Hooker & Arnott as a variety of Cassia cumingii and later by Bentham
as C. coquimbensis, neatly illustrate the morphological intermediacy of its sort.
Curiously, however, var. alcaparra is situated geographically to the south of var.
coquimbensis and not between that and var. cumingii. In the context of its species
and of those thought most nearly related, dohchostylous var. coquimbensis would
appear to be the derived form which has replaced brachystylous forms of S.
cumingii in one segment of its full range. The Alcapassa of the protologue of C.
cumingii is not a place name but a misreading ofthe vernacular alcaparra, applied
to this and other ChUean sennas.
98d. Senna cumingii (Hooker & Arnott) var. coquimbensis (Vogel) Irwin & Barneby,
stat. nov. Cassia coquimbensis Vogel, Syn. Gen. Cass. & Linnaea
11: 674, descr. ampliat. 1837.—"In Chih: Gaudichaud leg. pr.
Coquimbo. (v.s.s.fr. in Hrb. K[un]th.)"—Holotypus, Gaudichaud
115-a, tB = F Neg. 7675! neoholotypus, former isotypus, P! isotypus,
K!