OthcT Species o f ~Rháinnus. — There are various kinds described hy au th o rs ,
several o f which are said to have been introduced, b u t they are either lost or
synonymous with kinds already described. Among those which remain to be
introduced are some which promise to be useful additions to this genus ; such
as ; —
3É R . 'persidfolius B ert. (Moris. Stirp. Sard. fig. 2 .) — An e re ct shrub, with
lanceolate, minutely c renated leaves, pubescent on th e under .side, and on long
petioles. Calyx free. Sardinia. Height 10 ft. to 12 ft. March and April.
JÌ R . wnygdUmus Desf. Atl. 1. p. 198.—-A native o f th e N o rth o f Africa, in
the fissures o f rocks, where it grows to th e height of 3 ft., and produces berries
used for dyeing yellow, like those o f R. saxátilis.
a R . -prunifolius Smith P ro d . F l. Græc. 1. p. 157.— A native o f Crete, on
the highest mountains, and probably only a variety o f one o f th e preceding so rts.
a R . Sibthorpikmis Schult. Syst. 6. p. 286. ; R . pubéscens Sibth. F l. Græc.
t. 239. — A native o f Mount Pa rna ssus, and nearly allied to R . alpinus and R .
Frángula.
* R . Pîirs/dànus Dec. Prod. 2. p. 25. R . alnifòlius o f P u r sh , b u t n o t o f
L ’H é ritie r. ( Hook. F lo r.
Bor. Am .l. p. 123. t.4 3 .,
and our fig. 2 6 7 .) — A
shrub growing to the
height o f 6 ft., native of
. N o rth America, on th e
? banks o f th e Koorkoosky.
tt R . oleifòlms Ho o k .
F l. B o r. Am. 1. p. 123. t.
44., To r. & Gray, 1. p.
200., and Jig. 268. from
Ho o k e r, is an evergreen
shrub, with coriaceous
leaves, unarmed shoots,
and th e flowers small, in
axillary crowded panicles.
I t is a native o f th e n o rth west
2 6 7 . AhAranus Pu rshirtn«#. Ahámnus oleifòlius.
coast o f California,
where it forms a handsome shrub from 6 ft. to 12 ft. high.
m, R . uinbellàtus Cav. Icon. 6. p. 2. t. 504. —■ A shrub, growing 6 ft. high in
Mexico ; was raised in 1839 in th e H o rt. Soc. Garden, from seeds sen t home
by M. Hartweg ; b u t it is probably only half-hardy.
R . /aurifòlius N u tt., R . cròceus N u tt., R . lanceolàtus Pursh, R . parvifòlius
Tor. 4 Gray, R . ferrugineus N u tt., R . californiens E sch ,, and R . texénsis
Tor. 4. Gray, are described in T o r. and Gray’s Flora o f North America ; R .
pubéscens Fl. Græc., and several o th e rs, are described in D o n ’s Miller, and
in tlie first edition o f this work.
G e n u s V .
CO L L E 'T /r i Com. T h e C o l l e t t a . Lin. Syst. P e n tá n d ria Monogynia.
D o Identification. K u n th Nov. Gen. Amer., 7. p . 58. ; D e c . P ro d ., 2. p. S n ’s M ill., 2. p . 34.
S y n o n ym e . R h am n u s in p a rt.
De rivation. N am e d by Comme rson, in h o n o u r of Collet, h is friend an d co u n trym a n , who wro te
u p o n th e p lan ts of B rest.
Gen. Char. Calyx campanulate, membraneous, coloured. Petals wanting, o r very
minute, linear. Stamens with ovate 2-celled, o r reniform 1-celled, anthers.
Disk sh o rt, cup-shaped, adnate to th e bottom o f th e calyx. Ovary free,
3-ceiled. Style simple, elongated. Stigma 3-lobed. Fruit guarded a t the
base by th e permanent tube o f th e calyx, tricoccous, dehiscent. (Doris
M ill.) . , ,
Leaves, when present, simple, opposite, stipulate, deciduous ; very minute,
and quite entire. Flowers axillary, fascicled, or racemose ; and, when the
leaves a re absent, ri.sing from beneath th e base o f th e spines. — Much-
branched shrubs, with divaricating, decussately opposite branches, an d spiny
branchlets.
Berry
M 1. C. h o 'h r i d a ZiKi//. The bristly Colletia.
Identification. L in d l. in B o t. R eg . ? Ad. B rong.
S yn o n yme. C. fè ro x Gill, et Hook, in Bot. Mis. 1. 154. t. 44. ß .
E n g ra vin g s. Bot. R eg ., t. 1776. ; a n d o u r fig . 269.
Spec. Char., 4 c . Spines rigid, simple, o r much branched. Peduncles mostly
in pairs. Calyx ovate-oblong. Stamens sessile. (L in d i.) A spiny shrub,
evergreen, from th e colour o f its branches and branchlets. Chili and
Mendoza, on mountains. H e ig h t 3 ft. to 4 ft. In tro d u c ed in 1823.
Flowers greenish white, stained with dull p u rp le ; May to July,
whitish, about th e size o f a small pea ; ripe in Sept.
The young branches a re furnished with “ bright
green sawed scales ” as leaves •. they are placed oiqio-
site, and a t th e base o f each is a small stipule. The
leaves and stipules speedily fall off’, “ leaving the
branches to a ct as leaves, by th e aid o f their soft parenchyma,
wiih which they are clothed in th e form of
bark.” Hence, plants o f any size appear one mass of
naked spiny green branches in winter ; and, in summer,
haviug leaves and flowers ail over th e points o f th e
branchlets. It is a most desirable addition to o u r
evergreen shrubs ; and, as it escaped th e winter q f
lg 3 7 _ g rit may b e safely recommended as hardy, for climates
n o t much colder than th a t o f London. I t grows
in common garden soil, in a dry situation, fully exposed
to th e sun. I t has n o t y e t been propagated otherwise
tlian by Chilian seeds, which are frequently received
u n d e r th e name o f Retamlla. W e have no doubt,
however, th a t it might be increased by layers, or by
cuttings in sand under a glass. 2 6 9 . C o llè tta h ó r rid a .
Other Species o/Co//èiia. — T h e re are plants in th e London gardens, under
th e name o f C. spinósa and C. «lícina, which we consider merely as varieties
o f C. hórrida ; though th e former has white flowers, and th e la tte r broader
leaves th a n th o se which we have described. T h ey are considered more te n der
th a n C. hó rrid a ; b u t this may possibly be owing to th e plants having been
2 7 0 . C o llètta « líc in a . C. ß'phcdra.
younger. C. F'phedra V en t. Choix, t. 16. (th e Rham nus R 'p h ed ra Domh., and
th e ketanilla R 'p h e d ra Brong.) is said to have survived th e criterion winter
a t Liverpool. In 270., a represents C. idicina; b, C. E 'p h e d r a (Reta-
nilla R 'p h e d ra Brong.) ; and c, C. spinósa.