I l ■■
lì
‘Ssublongiore
semitrilo cu lari.— Gaud, in A n n . Sc. N a t. vol. v. p . 100, e t in Frey c, Voy. B o t. p p . 132
& 419. lyU i-v . Fl. In s . M a i. in Traiis. Soc. L im i. P a r is , vol. iii. p . 124. Roem. e t S chultes, vol. vii.
p t. 1. p . 196. L a H a rp e , June . 3 6 . K u n th , E ii. P la n t, vol. iii. p . 3 2 5 .—V a r. /3. inconspicuus. J . incori-
sp icu u s, D ’Urv,, Gaud., L a H arpe , locis c itatis.
H a b . L o rd A u ck la n d ’s g ro u p a n d Cam p b ell’s Is la n d ; sp a rin g ly in m a rsh y places n e a r th e
to p s o f th e hills, a lt. 1000 fe e t ; more ab u n d a n t in th e la tte r islan d a t th e level o f th e sea. C am p bell’s
Is lan d , n o t uncom mo n in gravelly places.
Culmi brevissimi, sub ^ unc. longi, sæpius pluries divisi, surculos radicantes interdum lateraliter emittentes,
basi fibrosi; fibris simplicibus. Folia subdistiche inserta, stricta, erecta, basi longe vaginantia, longitudine
varia, in var. /3. plerumque vix i unc. longa, sed exemplaribus plerisque 4 -8 uncialia, per totam longitudinem
compressa, in acumen curvatum v. uncinatum sæpe ad apicem attenuata, herbácea et subgraminea, nunquam
dura V. coriacea, striata, pallide viridia ; intus fistulosa, transverse articulata, nodis siccitate solummodo externe
conspicuis, internodiis 2-4 iin. longis, nervis prominentibus costatis ; vaginoe ^ folii æquantes, membranaceo-
dilatatæ, superne oblique rotundatæ v. truncatæ, seu in auriculas interdum sursum productæ. Scapi foliis
breviores, graciles, teretes vel paulo compressi, superne nudi. Capitula 4-8-flora, bractea foliiformi, plus
minusve elongata subtensa. Bracteolæ late ovatæ, acuminatæ, 3-5-nerves, dorso infra apicem carinatæ. Perianthii
foliola exteriora vix concava, ovato-lanceolata, acuminata, medio coriacea, trinervia, dorso subcarinata ;
marginibus late membranaceis, subscariosis, infra apicem involutis, fusco-purpureis ; interiora planiuscula, ovato-
oblonga, obtusa V. breviter acuminata, medio incrassata, nervosa, viridia ; marginibus albidis v. pallide fuscis,
late membranaceis. Stamina foliolis perianthii breviora ; filamenta plana, linearia, subelongata ; an/Aerce lineari-
oblongæ, apice breviter unguiculatæ. Ovarium triquetrum, triloculare. Stylus erectus. Stigmata 3, elongato-
filiformia, horizontaliter patentia, post anthesin torta. Capsula ovato-oblonga, perianthio paulo longior, trigona,
angulis obtusis, 3-valvis ; valvæ dorso concavæ, medio suhcanaliculatæ, septiferæ ; dissepimentis retractis, poly-
spermis. Semina plurima, biserialia, ovoidea; membrana externa hyahna, filamentosa, tenuissima, caduca, ad
rapbin incrassata ; interna pallide fusca, reticulata, utrinque reliquiis membranæ externæ subfilamentosa ; chalaza
latiuscula. opaca.
The Auckland and Campbell Island plant is assuredly identical with that of South America, and as a species
it is exceedingly distinct from any other with which I am acquainted, except perhaps, as Kunth suggests,
the J. microcephalus, H. B. K. Of this plant we have copious specimens, but as they are in the hands of
Meyer, who is now preparing a monograph of the genus Juncus, I am unable to compare them. So far as my
recollection serves me, there is much similarity between this species and one from the Andes of South America ;
but judging from the descriptions of Kunth in Humboldt’s Nov. Gen., the J . microcephalus differs materially
from this in size, in the creeping rhizoma, in the leaves being shorter than the scapes, the dichotomous corymb and
many other characters ; in fact, the articulated leaves, described by Kunth as terete, but by La Harpe as compressed,
seem to be almost the only character they possess in common. This is a much more common species than the
J . antarcticus, and differs as materially from it in the structure of the leaf, as the J . biglumis does from J . tri-
glumis. T h e / , scheuchzerioides has the leaves of a very soft texture, as are the leaflets of the perianth, none of
which are carinated at the back. The difference between the length of the scape and leaf is very remarkable.
I have retained the J . exiguus. Gaud., as a variety, though it hardly possesses characters sufficient to rank
as such ; it consists here, as in the Falkland Islands, of small specimens of the plant, often growing in a poorer
soil or drier locality.
2. R O S T K O V IA ,
Flos majusculus, solitarius. Perianthium glumaceum, hexaphyllum ; foliolis lineari-subulatis, 3 exteriori-
bus paulo majoribus, dorso acutis. Stamina 6, imo perianthii inserta, foliolis opposita ; anl/ieræ apice unguicu-
latoe. Ovarium oblongum, elongatum v. ovatum, trigonum, uniloculare. Ovula plurima, biserialia, placentis
3 parietalibus adnexa, anatropa. Stylus validus, elongatus, apice incrassatus. Stigmata 3, exserta, maxima,
lineari-subulata, intus glandulosa, dorso profunde canaliculata. Capsula unilocularis, trivalvis, valvis medio
intus carinatis, oarinis e septis retractis formates. Semina plurima, horizontalia v. ascendentia. Testa varia.
Embryo minimus, subquadratiis, in basi albuminis carnosi inclusus.—Herbæ Antarctica:. Culmi basi vaginati.
Folia solitaria v. plurima, elongata, teretia. Scapi graciles, apice uniflori, fo liis irembres.—Character ex Des-
vaux, paucis mutatis.—Rostkovia et Marsippospermum, Desv.
1. R o s t k o v ia Magellanica-, cuirais cæspitosis simplicibus v. im a b asi divisis, foliis p lu rim is
stric tis erec tis b asi v ag in an tib u s longe lin e a ri-su b u la tis sem ite re tib u s in fra med ium c an alicu latis, scap
is foliis lo n g io rib u s, floribus b ra c te a e lo n g ata su b ten s is , p e ria n th ii foliolis o v ato-lanceolatis m a rg im -
b u s la te scarioso-membranaceis, capsula p e rian th io p aulo longiore, sem in um te s ta a lb umin e conformi
coriacea.— Rostkovia sphæro carp a, Desvaux, Journ. de B o t. voi. i. p. 3 2 7 . J u n cu s Mag ellan icu s, L amk .
E n c y c l. Method, iii. p . 2 0 6 . Gaud, in A n n . S e . N a t. voi. v. p. 1 0 0 , et -in Frey c. Voy. B o t. p. 1 3 2 .
D ’Urv. Fl. In s . M a l. in A n n . Soc. L in n . P a r is , voi. iv. p . 6 0 4 . K u n th , E n . P la n t, vol. iü. p. 3 5 7 .
H a b . Campbell’s Is la n d ; in mossy an d sp rin g y places on th e h ills, especially a t th e sources o f
streams.
Culmi basi compressi, subelongati, inclinati, fibras crassas emittentes, interdum subsurculosi, simplices vel
divisi, rarius parce ramosi. Folia plurima, ad basin scapi cujusvis 8-10, erecta, stricta, rigida, longissime
lineari-subulata, 5-1 0 unc. longa, basi longe vaginantia, semiteretia v. obscure trigona, intus solida, supra basi
ad medium canaliculata, superne subtriquetra, ad apices pungentla, plus minusve curvata, glaberrima, polita,
nitida ; yaginoe compressæ, i - 1 une. longæ, basi 3-4 lin. latæ, subchartaceoe, superne coriaeeoe, oblique tru n catæ.
Scapi solitarii v. rarissime duo, erecti, graciles, teretes v. subtrigoni, foliis A-j breviores, infra florem solitarium
subincrassati, rigidi, solidi. Bractea: ad basin floris 2, valde inæquales ; superior e basi ovato-Iauoeolata
subulata, concava, chartacea, perianthium vix superans ; inferior concava, e basi vaginante late ovata, longe
subulata, erecta, stricta, perianthium bis qiiaterve superans, interdum folium omnino simulans. Perianthium
j: uno. longum ; foliola lineari-oblonga, attenuata. acuta v. acuminata, inter se subæqualia ; exteriora paulo
majora. concava, dorso acuta, superne carinata, coriacea, striata, castanea, nitida, marginibus late scariosis, pal-
lidis ; interiora planiora, medio incrassata. Stamina 6, inclusa ; filamenta liiiearia, medlo uninèrvia, perianthio
^ breviora ; antheræ lineares, elongatæ, filamentis paulo breviores ; connectivo ultra apicem in ungueni brevem,
obtusum, subrecurvuin producto ; loculis parallelis, rimis lateralibus dehiscentibus. Pollen tetragonum. intus 3-4-
granulosum,flavum. Ovarium elliptico-ovatum, in stylum attenuatum, obtuse trigonum. I-loculare. Placenta
nerviformes, parietales, dissepimentis obsoletis sitæ, Ovula plurima, biserialia, ascendentia, funiculis brevibus placentis
adnexa, anatropa. Stylus elongatus. erectus, validus, strictus, basi gracilis, superne gradatim incrassatus,
ovario æquilongus. Stigmata 3, tota exserta, erecto-patentia, subulato-filiformia, ad báseos latiores confiuentia,
intus per totam longitudinem glandulosa, dorso glaberrima, profunde canaliculata. Capsula periaiitliium superans,
late obovato-oblonga, prismatica, imgulis obtusiusculis, apice acuta, v. stylo persistente mucronata, dura et coriacea.
sublignea, castanea, nitida, quasi vernicosa, unilocularis, polysperma, trivalvis ; valva oblongæ, utrinque
acutæ, concavæ, dorso medio canaliculatæ, intus septo incompleto oostatæ. Semina numerosa. conferta, lentifor-
mia, utrinque obtusa, paulo compressa, latere unico subcarinata, loevia, castanea, nitida, basi pallidiora ; umbilico
nudo. Membrana seminis exterior crassa, coriacea, intus spongiosa ; interior membranacea, obscure reticulata, i l#