536 
SÉANCE DU 28 JUIN 1912. 
— Diagnoses latines. — Saxifraga Prostiana Ser. — Polymorpha, laxe 
vel dense cæspitosa, viscosa atque suaveolens, tota pilis glandulosis, 
multis longisque in calycibus, pedunculis, caulibus floriferis et foliorum 
marginibus, obsita; caudiculis numerosis fruticulosis, apice rosnlatis 
atque lœte virentibus, foliis vetustis pallide viridibus, vel fuscis, plus 
minusve dense vestitis; caulibus floriferis 2,5-12 cm. altis, fragilibus, 
0-5-foliosis, paucifloris. Surculi sessiles vel subsessiles vel stipitati. Folia 
omnia, in vivo, subtus lævia, supra sulcata; omnia, in sicco, in utraque pagina 
valcle elevato-nervosa; suprabasilaria subpatula, læte viridia, alia integra 
sublinearia vel subspatkulata, alia 2-3-fda, sessilia vel subsessilia vel petio- 
lata, valde polymorpha : obovata, obovato-cuneata, cuneata, lobis linearibus 
obtusis, vulgo brevibus; basilaria patulavel rellexa, luteo-viridia, nunquam 
integra, sessilia vel subsessilia vel petiolo late lineari peliolata, limbo obovato 
vel cuneato 3-5-fido, lobis linearibus obtusis , porrectis, brevibus, rarius 
elongatis; infrabasilaria valde patulavel reflexa, cuneata vel obovato-cuneata, 
vulgo sessilia, brévia vel in petiolum latum breviter leviterque attenuata, 
3-5-fida, lobis obtusis brevibus ; caulina, modo omnia linearia integra, modo 
superiora integra inferioraque trifida, nonnunquam omnia in robustis specimi- 
nibus trifida atque rariora, rarissime deficientia; bracteæ atque prophylla 
linearia integra. Flores 1-9 (vulgo 3-5), laxe cymosi, vel breviter paniculati, 
pedunculis longiusculis vel elongatis 1-2-floris. Petala lactea, obovata vel 
rotundato-obovata vel oblongo-obovata, exunguiculata, haud mro apice leviter 
retusa vel emarginata, 3-5-ncrvia , nervis haud coloratis, laciniis calycinis 
prope 3-longiora atque 3-latiora. Laciniæ ovatæ vel ovato-oblongæ, obtusis- 
simæ vel apice rotundatæ. Staminum filamenta laciniis per anthesin saltem 
æqualia, tubo primum sublongiora, demurn breviora atque jmrpurascentia. 
Antheræ luteæ, apice rotundatæ, rarius apiculatæ. Styli sepalis breviores, 
in capsula valde divaricati, stigmatibus pubescentibus obliquis. Capsula 
inclusa valde accrescens, subhemisphærica. Semina oblonga, carinata, 
tuberculis minutissimis obecta. 
a. vu.lgo.ris Luiz. — Caules florifcri 4-6 cm. alti , 3-5-flori, pedunculis 
unifloris. Folia basilaria atque infrabasilaria obovata vel obovato-cuneata, 
lata, brévia, sessilia vel subsessilia, lobis latis et brevibus. Petala contigua, 
valde obovata, 4-5 mm. longa atque 3-3,5 mm. lata. 
(3. ongustoto Luiz. — Caules floriferi 4--o cm. alti, 3-5-flori, pedunculis 
unifloris. Folia basilaria atque infrabasilaria cuneata sessilia vel in petiolum 
latum attenuata. Petala leviter contigua, obovato-oblonga, 4-5 mm. longa 
atque 2 mm. 2,3-lata. Staminum filamenta laciniis longiora. 
Y* micrantha Luiz. — Caules floriferi 3-4 cm. alti, 2-4-flori, pedunculis 
unifloris. Folia basilaria atque infrabasilaria cuneata vel obovato-cuneata, 
brévia, sessilia vel subsessilia, 3-fida, lobis brevibus. Flores valde minores, 
petalis contiguis, 3-3,5 mm. longis atque 2 mm. latis. Staminum filamenta laci¬ 
niis longiora. 
ô. Malinvaudii Luiz. — Vulgo robusta, caulibus floriferis 6-12 cm. 
altis, 4-9-floris, pedunculis 1-2- floris. Folia basilaria atque infrabasilaria 
cuneata, peliolata, limbo obovato vel cuneato, 3-5 fido, lobis haud raro elon¬ 
gatis. Petala late contigua , rotundato-obovata, 5-7 mm. longa atque 4-5 mm. 
lata. 
