OXALIDEZ. 
dular hairs, about the length of the styles. Y%.G. Native of 
the Cape of Good Hope. Flowers yellow. This species is very 
like the preceding. 
Fallacious Wood-sorrel. P]. + foot. 
181 O. MACROGÒNIA (Jacq. ox. no. 87. t. 70.) almost stemless, 
rather pilose; leaflets obcordate, roundish ; scape shorter than 
the leaves, with 2 bracteas a little above the middle ; styles very 
long, and are as well as the filaments covered with glandular 
hairs. 2%.G. Native of the Cape of Good Hope. Flowers 
yellow. Sepals each with 2 red glands at the top. 
Long-angled Wood-sorrel. P]. 4 foot. 
182 O. Piórræ (Coll. hort. rip. p. 98. t. 1.) stemless, tufted, 
smooth ; leaflets small, obcordate, sessile ; scape twice the length 
of the leaves, with 2 bracteas above the middle ; styles longer 
than the stamens, glandular; filaments smooth ; sepals acute, 
reflexed at the apex. 4. G. Native of the Cape of Good 
Hope. Flowers large, rose-coloured. 
Piotta’s Wood-sorrel. FJ. Jan. Sept. Clt.1816. Pl. + ft. 
_183 O. Mrcavora’mica (Spreng. syst. app. p. 184.) stemless, 
pilose; leaflets obcordate : scape longer than the leaves, with 2 
bracteas above the middle; sepals bluntish; inner stamens 
longer than the styles. X. S. Native of Brazil, on the banks 
of the Rio Grande. Flowers yellow ? 
Rio Grande Wood-sorrel. P]. + foot. 
184 O. uisriputa (Zucc. in act. monach. 9. ex Spreng. syst. 
append. p. 184.) stemless, hispid; leaflets obcordate, ciliated ; 
glaucous beneath ; scape longer than the leaves, with 2 bracteas ; 
sepals acute, with 2 glands at the top of each; styles longer than 
the longest Stamens. 2.8. Native of Brazil. 
Hispid Wood-sorrel. Pl. 4 foot. 
185 O. rrtorniza (Zucc. in act. monach. 9. ex Spreng. syst. 
append. p- 184.) stemless: leaflets obcordately 2-lobed, smooth ; 
petioles hairy ; scape longer than the leaves, with 2 bracteas ; 
ans shorter than the stamens. 2/. S. Native of Brazil. Bulb 
woolly. 
Woolly-rocted Wood-sorrel. Pl. 1 foot. 
186 O. Lopa‘ra (Sims, bot. mag. t. 2386.) stemless, smooth ; 
scapes longer than the leaves, with 2 bracteas ; leaflets obcor- 
date, rather glaucous beneath; sepals acute; root tuberous. 
Y.G. Native of Chili. Flowers yellow, but spotted with red. 
Lobed-leaved Wood-sorrel. FI. Oct. Nov. Clt. 1823. Pl. 5 ft. 
187 O. wana (St. Hil. ex Spreng. syst. append. 184.) stem- 
less, smooth ; leaflets obovate; scape longer than the leaves, 
with 2 bracteas ; styles longer than the stamens. 4.S. Native 
of Brazil, at Rio Grande. 
Dwarf Wood-sorrel. Pl. 1 foot. 
188 O. TENERA (Spreng. syst. 2. p. 424.) stemless, smooth ; 
eaflets sessile, obcordate ; scape villous, flaccid, 1-2-flowered, 
Onger than the leaves, with 2 bracteas in the middle; sepals 
awl-shaped ; styles longer than the stamens. 2. G. Native of 
Monte Video. ` Bulb fusiform. Flowers yellow. Lindl. bot. 
Teg. 1046, 
Tender Wood-sorrel. Fl. May. Clt. 1826. Pl. 4 foot. 
189 O. Macerra’nica (Forst. comm, goet. 9. p. 33.) stem- 
ess; leaflets obcordate, roundish, fleshy, smooth ; scape shorter 
than the leaves, with 2 bracteas at the top. 2%. G. Native of 
erra del Fuego in wet places. Flowers white, about the size 
of those of O. acetosélla. 
Magellan Wood-sorrel. Pl. 4 foot. 
190 O. acerosr'rra (Lin. spec. 620.) stemless ; root of many 
scaly joints, creeping ; leaflets obcordate, puberulous ; scapes 
Onger than the leaves, with 2 bracteas above the middle; petals 
oval, obtuse ; styles equal or longer than the inner stamens. 4. 
+ Native throughout Europe, in shady places ; plentiful in Bri- 
n. Smith, engl. bot. t. 762. Œd. fl. dan. t. 980. Jacq. Ox. 
Ro. 91, t. 80, f. 1. Woody. med bot. p. 56. t. 20. Curt, fi. lond. 
III. Oxars. 765 
fasc. 2. t. 31. Mill. fig. 195. f. 2. O’xys acetosella, Hall. helv. 
no. 928. Flowers white, beautifully veined with purple. Mr. 
Curtis remarks that the leaves are frequently purplish beneath, 
that the capsules dart forth their seeds at the slightest touch when 
ripe. This plant, says Gerarde, is called Wood-sour Trefoil, 
Stubwort, and Sorrel de Bois; by herbalists A lleluja and Cuckoo's 
meat, because it springs forth and flowers with the singing of 
the cuckoo, at which time Alleluja also was wont to be sung in 
churches. The names Alleluja and Lujula are, however, cor- 
rupted from the Calabrian name Juliola. It is probably called 
Stubwort from its covering the ground among the stubs in cop- 
pices, when they are cut down. In French it is called La petite 
oseille or Surelle and Pain à coucou. 
Wood-sorrel has a grateful acid taste, more grateful than 
common sorrel, and therefore proper to be used in salads ; its 
acid approaches near to that of the juice of lemons, or the acid 
of tartar, with which it also corresponds in its medical effects, 
being esteemed refrigerant, antiscorbutic, and diuretic. An infu- 
sion of the leaves, or a whey made by boiling the plant in milk, 
was formerly used in ardent fevers to allay inordinate heat, and to 
quench thirst. The London College directs a conserve of the 
leaves and petals to be made by beating them, with thrice their 
weight of fine sugar and orange-peel, which has the taste of green 
tea. It is called Conserva Lujulæ. The expressed juice de- 
purated, properly evaporated, and set in a cool place, affords a 
crystalline acid salt in considerable quantity, which may be used 
wherever vegetable acids are wanted. It is employed to take 
iron-moulds and ink-stains out of linen, and is sold under the 
name of Essential Salt of Lemons. This salt, when genuine, 
which it seldom is, consists of the vegetable alkali, and a pecu- 
liar acid, which, according to Bergman, seems more allied to 
the acid of sugar than that of tartar. What is sold for it in 
this country, appears sometimes to consist of cream of tartar 
with the addition of a small quantity of vitriolic acid. For 
taking out spots in linen, the stained part is dipped in water, 
sprinkled with a little of the salt powdered, then rubbed on a 
pewter plate, after which the spot is washed out with warm 
water. Dr. Beddoes informs us, that the leaves and stalks, 
wrapped up in a cabbage-leaf, and macerated in warm ashes 
until reduced to a pulp, have been successfully applied to scro- 
fulous ulcers. This poultice should remain on the sore for 
twenty-four hours, and be repeated four times. A fterwards the 
ulcer is to be dressed with a poultice made of the roots of 
Meadow-sweet (Spiræa ulmària), bruised and mixed up with 
the scum of sour butter-milk: doubtless many of the foreign 
species may be used in the same way. There is no doubt but 
a salt may be prepared from all the species. Thunberg says 
that a good salt was prepared from O'xalis cérnua at the Cape, 
which grows in great abundance there; but he does not inform 
us in what quantity. Twenty pounds of fresh leaves of our 
Wood-sorrel yielded, according to Newman, six pounds of juice, 
from which two ounces, two drachms, and one scruple of salt, 
besides two ounces and six drachms of an impure saline mass 
Oxalic acid is a vegetable acid naturally formed 
were procured. 
P It has been 
in O'xalis acetosélla, from which it takes its name. 
ered by Scheele that this acid can be formed by the action 
veral other vegetable substances. 
n to Bergman, 
discov 
of nitric acid upon sugar and se . 
The merit of this discovery was formerly given ti 
who first published the method of preparing it in this way. 
Var. B, cærùlea (D. C. prod. 700.) flowers bluish.— Fourn. 
inst. 88. . 
ar y, subpurpurdscens (D. C. prod. 1. p. 700.) fiowers 
le-rose or purplish. %. H. This is a less plant than the 
species and flowers later. It is to be found in England in a 
between Owram and Halifax. — 
ane ramon Wood-sorrel. F}. April, May. Brit. Pl. 1 foot. 
