Herbarium catalogue

4 { ie Rhododendron epipastum, Balf. f. et Forrest. . adpressis arachnoideis constructo vestiti, annotini cire. 1.5 cm. diam, indumenti vestigiis plus minusve notati. Perulae fugi- tivae. Folia petiolata ad 8 cm. longa; lamina subchartacea an- guste oblonga vel obovalis ad 7.5 cm. longa 2.5 cm. lata nunc paullo obliqua, apice late obtusa nunc rotundata breviter pur- pureo-mucronata, margine cartilaginea subplana, basi late obtusa; supra in juventute plus minusve floccosa maturitate laete viridis interdum purpurascens, costa media sulcata, venis primariis utrinsecus ad 12 paullo pinnatim impressis; subtus initio alba demum cinerea vel viridi-grisea indumento unistrato laxo tenwi quasi detersili e pilis rosulatim ramosis adpressis velum apertum supra superficiem viridem aedificante vestita, costa media elevata paullo erubescente et sparsim floccosa ; peti- olus cire. 5 mm. longus ut rami vestitus. Umbella circ. 4-flora; pedicelli cire. 1.5 cm. longi setulis paucis induti eglandulosi sparsim floccosi apice incrassati. Calyx parvus circ. 4 mm. longus 5-lobus; cupula sparsim breviterque setulosa; lobi circ. 2 mm. longi rotundati vel ovati dorso glabri margine breviter setuloso-ciliati rubri circum basim corollae adpressi persistentes. Corolla rosea circ. ad 3 cm. longa aperte campanulata basi paullo gibbosa et intensius colorata ; lobi parvi 1 cm. longi 1.5 cm. lati. Stamina Io circum stylum aggregata ad 2.7 cm. longa; filamenta glabra.. Discus vix puberulus. Gynaeceum corollam sub- aequans ; ovarium circ. 4 mm. longum pilis fasciatis et glandu- lis setulosis paucioribus vestitum; stylus glaber; stigma subdis- coideum. Species Seriei Sanguinei. S.E. Tibet. Tsarong. G. Forrest No. 18,645. 10917. This does not appear in dried specimens as a very attractive plant. It is one of the Sanguineum Series showing connection with several species but yet differing in its aggregation of characters from all of them. With a primitive thin white indu- mentum it has no glands; the underleaf indumentum is so thin and open that the green leaf-surface may be seen between the hairs; the pedicels have only a few setulose and floccose hairs, no glands ; the calyx quite small and like that of Rh. sanguineum itself only never reflexing and the 5 red lobes appear as lateral patches at base of developing fruit; corolla rose and small; sta- mens glabrous; ovary tomentose with fasciate hairs and a few setulose glands. wm We RY, Eoin, wii 192.2) 258 Fruticulus. Rami juveniles indumento albido e pilis ramosis xo) ® Ps hee ® n ® — vee <= ao?) = > 2. Oo oO MX. ofecfur bar 4 (e) epipastum comb. nov. Rh. epipastum Balf. f. et Forrest in Notes R.B.G. Edin. xiii (1922), 258. Rh. eudoxum Balf. f. mesopolium form e (1930), 549. : Like mesopolium this variant of Rh. fulvastrum has typical arachnoid indumentum and rose-coloured flowers, but the Ovary is glandular tomentose. The form trichomiscum mi i : might be included here i the present kept separate. ied a: Forrest 18645 ( Tibet, Tsarong, Rock 22060. Distribution: S.E. Tibet ; é et Forrest subspecies pipastum in The Species of Rhododendron type of Rh. epipastum Balf. f. et Forrest. “S.E Duplicate of 1917. 1g1g.”’) : Tsarong, Salwin-Irrawaddy divide. Cotype ROYAL BOTANIC GARDEN In

ROYAL BOTANIC GARDEN \ | ¥ 16757 . Gta. .ntzerlsm bya ba os IQ 0 Neban AG gi CAmbrgt.. 13: 51 (1920) ee bo Fe peniasas 1yBuAdoo iP. eucloxum Baly.(. RB Fows var. mesopelium ( Balg-f. b Faw.) Chomb. Det. D. F. Chamberlain (979 (UA. A Lheacliunn. BLE ct Fret Re eee yas Crna Determinavit XS. 43. Uh. efuna. 16751 No. fuk, = Aus:191 oe. Alt. 134g &} M4 Locality we Lule. 27° £4. Phed. Sregaprliuns. Alf. cb Sool <i Ue. o

Rhododendron mesopolium, Balf. f. et Forrest. ti Metee Ya G. He. XIN (192 0) ST Frutex ad .5 m. altus. Rami nodulati, annotini glabre- scentes vestigiis indumenti juvenilis albidis notati et pediculis siccis glandularum facie setuliformibus sparsissime conspersi. Perulae fugitivae. Folia petiolata ad 6.5 cm. longa; lamina oblonga vel angustissime obovata ad 6 cm. longa 2 cm: lata; apice rotundata vel late obtusa apiculato-mucronata, margine vix recurva, basi obtusa saepe inaequalis ; supra olivacea glabra opaca, costa media venisque primariis utrinsecus circ. 11 sulcatis ; subtus brunneo-grisea quasi punctulata indumento tenui arach- noideo praedita, venis primariis erubescentibus ; petiolus circ. 5 mm. longus ut rami indutus. Umbella 2-4-flora; pedicelli <,. vix 1.5 cm. longi floccosi glandulosi glandulis longe stipitatis._ Calyx ad-4 mm. longus ; lobi ovales obtusi flavido-virides sub- membranacei recurvi glabri (margine breviter sebaceo-ciliato xo] excepto). Corolla pallide rosea campanulata circ. 3 cm. longa Md glabra; lobi rotundati emarginati. Stamina 10 inaequalia © corolla paullo breviora gynaeceum subaequantia; filamenta 8 puberula. Discus glaber. Gynaeceum corolla paullo brevius ; . ovarium pilis ascendentibus longis ramosis dense obtectum ; a stylus glaber. Species Seriei Sanguinei. = S.E. Tibet. Tsarong. Doker-la.. Forrest. 16,751. July- S Aug. 1918. 8 Aad Points:-\ Puberulous stamens Separate it from RH. CLOIOPHORUM as does glandular pedicels. Calyx-lobes glabrous and only ciliate separate from RH. ROSEO-TINCTUM with other characters as does glandular pedi- cels. Further arachnoid underleaf indumentum separates from RH. wm POYAT oan a ¥ VO IT RT my ter XANTHOCHITON and from RH. ROSEO-TINCTUM as well as other characters. Poy . btAn ISOTYPE : Vater flag MA boned. Fd beg west (142 o) ach ass aii oo sealant ekg 4 ROYAL BOTANIC GARDEN eo wo 0040