Tap. 8332. 
RHODODENDRON UNGERNIIL. 
Caucasus. 
: ErtcacgEar. Tribe RHODOREAE. 
RHODODENDRON, Linn.; Benth. et Hook. f. Gen. Plant. vol. ii. p. 599. 
Rhododendron (Eurhododendron) Ungernii, Trauty. in Acta Hort. Petrop. 
vol. ix. (1884), p. 514; Rege/, Gartenflora, vol. xxxiv. (1885), p. 335 et 
vol. xxxv. (1886), pp. 378, 1226; Lipsky, Consp. Fl, Cauc. in Acta Hort, 
Tiflis, vol. iv. p. 882; inter species caucasicas foliis oblongo-oblanceolatis 
rigide apiculatis subtus densissime fulvo-tomentosis et floribus dilute 
roseis distinctum. 
Frutex vel arbor parva, 4-6 m. alta, ramis floriferis crassis rigidis rectis 
primum pubescentibus. Folia valide petiolata, sparsa, biennia vel 
triennia ; lamina crasse cor‘acea, rigida, oblongo-oblanceolata, 10-15 cm. 
longa, maxima supra medium 5 em. lata, apice rotundata simul apiculata, 
basi cuneata, supra glabra, saturate viridia, subtus densissime firmiterqne 
fulvo-tomentosa; costa supra impressa, subtus crassa, elevata, venis 
utrinque inconspicuis; petiolus crassus circiter 2 cm. longus, primum 
pubescens, leviter canaliculatus. ores albo-rosei, circiter 5 cm. diametro, 
racemoso-corymbosi, corymbis 20-30-floris et 15-20 cm. diametro; pedicelli 
graciliusculi, 3-4 cm. longi, pilis albis crispnlis parce vestiti; braciere 
angnstae, acutae, quam pedicelli breviores, fulvae, albo-pilosulae, cito 
deciduae. Calycis lobi inaequales, 3-6 mm. longi, lanceolati, obtusi, 
glanduloso-ciliati. Corolla late campanulata, extra glabra, intus infra 
melium puberula, usque ad medium 5-lobata; lobi fere aequales, lati, 
rotundati, obscure emarginati, reeurvi, posterior major intus obscure 
punctatus, omnes longitudinaliter venoso-striati. Stamina 10, quam corolla 
triente breviora, inter se alterna paullo breviora; antherae breves; fila- 
menta filiformia, infra medium et paullo supra basin zona glandularum 
stipitatarum ornata. OUvarium 5-loculare, pilis crassis crispulis dense 
vestitum; stylus glaber, stamina paullo excedens. Capsula subeylindrica, 
circiter 1:5 cm. longa, glabresceus, Semina circiter 1°5 mm. longa, 
utrinque cristata—W. B. Hems.ey. 
The species here figured is a native of the district of 
Batoum to the south of the Caucasus, where the familiar 
Rhododendron ponticum, Linn., figured at t. 650 of this 
work, is also wild. It was discovered some twenty-five 
years ago, by Baron Ungern-Sternberg, growing under 
Picea orientalis at elevations of from 4000 to 6000 feet 
above sea-level, where it occupies a zone between that of 
f. ponticum, at lower levels, and that of A, caucasicum, Pall., 
figured at t. 1145 of this work, higher up. The subject of 
our illustration was raised from seed received from the 
Imperial Botanic Garden, St. Petersburg, in 1866; at Kew 
it has been grown in a pot under the conditions most 
SepremBer, 1910. 
