62 
wnffering f f lent in the district which bedi e 
killed pla ants pe Nor the warmer parts of the island. It would 
therefore be well worth while to give any seedlings you may raise from 
the seed sent a fair trial, with a view of proving whether this particular 
orward to you, as you will have a better wi d of testing it. I 
have a little more re deyin out which will be forwarded as soon as it is 
d I send e this a little seed of the hardy p> coccifera which I 
zer have seen on the top of Mount Weilington completely coated witk ice, 
.. and shielded wih Teles a foot or more long hanging from the branches. 
— Thave no seed of E. verrucosa at present, but will get some as soon as 
E This is a very dwarf species, usually under 4 feet, and at 
st is very sparing at producing seed. I have no doubt it will be 
k 
t 
t 
y 7 : 
- t will not be possible to obtain much seed, but any I may get I will 
I 
re: 
LXXXVI.—YAM BEAN. 
(Pachyrhizus tuberosus, Spreng.) 
With Plate, 
In the Kew Bulletin for January last, P. 17, an account was given of 
the interesting economic plant known s Yam Bean Pachyrhizus 
tuberosus, Spreng). It was then mentioned that a figure and descrip- 
of 
this plant appear in Plumier, Plant. Amer., pl. 220, and in Descourtilz, 
. Flore des Antilles (1829), viii., p. 127, pl. 554. As these old works 
are not readily accessible, the present figure will prove of interest 
and afford a means of comparison with P. angulatus, Rich.,a figure 
. of which will appear later. 
Pachyrhizus tuberosus, Spreng. Syst. Veg. pars. 2, 281. 
Roots tuberous. Stem herbaceous twining 10-20 i Corte) Leaves 
pinnate, erre ge long-petioled, stipules linear lanceolate; leaflets 
broadly rhomboid-ovate pointed entire or obscurely € in young 
peci ‘sometimes shallowly lobed, terminal leaflet broadly cuneate 
at the base, lateral oblique, stipels subulate. Racemes sub-compound, 
- lower branches very short, with flowers in fascicles. Calyx ó-lobed, 
lobes as long as the tube, superior shorter. Corolla white (Trimen). — 
E 8-12 inches long, 9-10 lines broad, slightly hairy when 
your a ressed somewhat bent, with deep transverse depressions - 
between the Bu black or pale spotted seeds. oe 
The specimens in the Kew Herbarium are all apparently from — 
cultivated agp eR alg ce Spruce (4936), from Dr. Ernst, Caracas, 2t 
Ceylon rece ently fro Dr. Trimen, of the Botanic Garden, Kern 
* Mr. Ben 
* this species. I think: ^ may well be a variety originated under cul- 
* tivation, but so mark to require a dam name for cultural 
, 2nd February, Dr. Ernst supplies. ihe 
oy nearer lofoemation =< " 
With v: j Pachyrhizus tuberosus, which I had in cultivation or 
some time, "most say tat in vet fora ee a MA 5 the 
