48 Vermischte neue Diagnosen. 
nessun altro fra i nostrani. — Euxena cebennensis V. Calestani, 1. c., p. 377 
(= Arabis cebennensis DC.). Non ho veduto nessun esemplare italiano, 
che apparterrebbe a una varietà distinta (Ar. pedemontana Boiss.). 
558. Stizolobium Deeringianum Katherine Stephens Bort. in U. S. 
Bur. of Plant Ind. — Bull. no. 141, pt. III, p. 31, pl. I—II. — An annual, 
herbaceous, climbing vine sometimes 20 m in length when growing on 
supports, and even on the ground attaining a length of from 2 to 6 m, - 
bearing long, pendent racemes of purple flowers which produce dark, 
velvety pods 5 or 6 cm long. Stems rather slender, terete, sparsely 
pubescent, with white, appressed hairs, especially on the ridges. Petioles 
equaling or exceeding the leaflets, pubescent like the stem, and con- 
tinued for 2 to 4 cm beyond the lateral leaflets; stipules subulate, pu- 
bescent, about 1 cm long; stipels similar but smaller; petiolules about 
5 mm long, stout, very pubescent. Leaflets rhomboid-ovate, the lateral 
ones oblique, membranaceous, acuminate-cuspidate, 5 to 15 cm long, 
about half as broad, sparsely pubescent, above, especially on the veins, 
more densely pubescent beneath, the white hairs closely appressed. In- 
florescence a raceme or thyrsus 15 to 30 cm long, pendent, bearing 5 to 
30 flowers, usually about 12; rachis like the stem, but more pubescent; 
flowers borne singly or in twos or threes on short lateral branchlets. 
Bracts lanceolate-subulate, very pubescent, early fugacious. Calyx pu- 
bescent within and without with short, white, appressed hairs, 2 lipped, 
the upper lip broadly triangular, the lower lip 8 cleft, the lobes trian- 
gular-subulate, the middle one longest; stinging hairs absent. Corolla 
dark purple, 3 to 4 cm long; standard less than half the length of the 
keel, darker than the rest of the flower; wings slightly shorter than the 
keel, rather broad, oblanceolate-oblong, obtuse; keel straight to near the 
tip, where it curves sharply upward, the tip firm and acute; anthers of 
two sorts alternately Jong and short, the latter on much broader fila- 
ments; ovary linear, pubescent; style filiform, pubescent nearly to the 
tip; stigma small. Pods when mature 5 to 6 cm long, turgid, densely 
covered with a soft, nearly black, velvety pubescence without stinging 
hairs; valves with 1 or 2 or sometimes 3 obscure longitudinal ridges. 
Seeds 3 to 5 in each pod, subglobose, marbled and speckled with brown 
or black, and sometimes both, on ash-gray ground color (though pure 
gray and, it is said, pure black occur rarely), 1 to 1,5 cm in diameter. 
Hilum white, oblong-crateriform, less than one-half the length of the 
seed. — This description is based mainly on specimens in the United 
States National Herbarium collected by S. C. Carleton, Argo, Florida, in 
1890. — Common name, Florida velvet bean. The original source of the 
species is unknown. At present it is cultivated extensively in Florida 
and to a less degree elsewhere. 
