150 
SELECTED ARTICLES. 
Radices lignosae, teretes, subho- 
rizontales, tortuosae, ramosae, ramis 
vermicularibus, saepe fasciculatis. 
Caulis suffruticosus, procumbens, 
teres, tubulosus, ramosus ; ramulis 
bifariam pubescentibus. 
Folia alterna, ovalia, basi cunea- 
ta, utrinque rugosa 1 sub-ciliata, ser- 
rata, dentibus apice glandulosis ; 
petiolis brevibus ; stipulis petiolo 
sublongioribus, ovato-lanceolatis. 
Roots woody, round, subhorizon- 
tal, tortuous, branched ; branches 
vermiculor, often in tufts. 
Stem undershrubby, procumbent, 
round, tubular, branches blanched 
pubescent on two opposite sides. 
Leaves alternate, oval, wedge- 
shaped at base, wrinkled on both 
sides? subciliated, serrated, apex 
of the teeth glandular; petioles 
short; stipules rather longer than 
the petioles, ovate-lanceolate. 
Character Specificus. 
Ionidium Marcucci, (nobis) suf- 
fruticosum, procumbens, ramosum, 
ramis bifariam pubescentibus, foliis 
alternis, ovalibus, basi cuneatis, ser- 
ratis, dentibus apice glandulosis, 
stipulis petiola sublongioribus, ova- 
to-lanceolatis, sepalis ovato-acutis, 
labello calycem duplo triplove su- 
perante, late obcordato, petalis la- 
teralibus falcatis, filamentorum 
membranis terminalibus ovatis, pe- 
dunculis hinc linea puberula notatis, 
folio longioribus, capsula sphaerico- 
trigona, seminibus globoso-ovatis, 
apice concavo truncatis nitidis fus- 
cis. Habitat inter saxs prope Rio- 
bamba et Hambato Quitensium, ad 
pedem Volcani Chimborazo. 
Differt Ionidium Marcucci {no- 
bis) ab Ionidio parviflora 
(ventenat) Viola parviflora 
(Mutis et Linnsei.) 
Caule suffrutico3o, procumbente, 
tubuloso, foliis ovalibus, foliorum 
dentibus apice glandulosis, stipulis 
Specific Character. 
Ionidium Marcucci, undershrubby, 
procumbent, branchy, branches pu- 
bescent on two opposite sides, 
leaves alternate, oval, wedge-shap- 
ed at base, serrated, the teeth glan- 
dular at the apex, stipules longer 
than the petioles, ovate-lanceolate, 
sepals ovate-acute, labellum twice 
or thrice longer than the calyx, ob- 
cordate, lateral petals falcated, ter- 
minal membranes of the filaments 
ovate, peduncles with a line of pu- 
bescence on one side, longer than 
the leaves. Capsules sph serico-tri- 
gonal, seeds globose, ovate, con- 
cavely truncated at the apex, shin- 
ing, dark brown. Growing among 
the rocks about Riobamba and Ham- 
bato, at the foot of the great Volca- 
no Chimborazo. 
Differt Ionidium parviflorum 
(ventenat) Viola parvifloro 
(Mutis et Linnsei) ab Ionidio 
Marcucci (nobis.) 
Caule fruticoso, difTuso, foliis ova- 
tis, stipulis petioli vix longitudine, 
pedunculis glabris, labello ovato, 
