D. LUIZET. => CONTRIBUTION A L'ÉTUDE DES SAXIFRAGES. 303 
5. major Luiz. et Neyr. = Laziuscula, caulibus floriferis 9-12 cm. altis, 
8-15-floris, haud raro divaricatis (S. divaricata Ram.! in herb. Drake!). 
Mt Péguère! (Neyraut!) 
y. pruinosa Lap. — Folia suprabasilaria ad modum speculi in vivo nitida ; 
crustis albidis valde induta. Mt Péguère! (Neyraut!) 
Var. laciniata Luiz. et Neyr. — Laza vel laxissima, surculis elongatis ; 
caulibus floriferis 7-10 cm. altis. Folia basilaria longe atque anguste petio- 
lata, profunde 5-7-fida, laciniis angustissimis subparallelis. Mt Péguère! 
(Neyraut!) 
Saxifraga nervosa Lap. — S. intricata Lap. vulgo humilior sed 
robustior, præcipue supra 4 500 m. alt., dense vel laxe cœspitosa, obscure 
virens, viscosissima atque suaveolens, resinacea, pilis brevibus glandulosis 
plus minusve dense obsita; caudiculis fruticulosis vel lignosis, foliis vetustis 
fuscis patulis vel refleris dense vel laxiuscule obtectis; caulibus floriferis 
erectis, 3,5-14,5 cm. altis, sepius monophyllis, rarius 2-3-phyllis vel nudis, 
laxe paniculatis 3-22-floris (vulgo 6-10), pedunculis plus minusve elongatis 
vel patulis, biftoris, rarius unifloris vel 3-4-5-floris. Bractea inferior vulgo 
cuneata, 3-5-fida, raro indivisa. Folia prophylla sublinearia integra 
obtusa ; caulina vulgo cuneata, petiolata vel in petiolum attenuata, limbo 
profunde tripartito, lobis linearibus obtusis plus minusve divaricatis, late- 
ralibus haud raro bifidis; suprabasilaria valde sulcata, in stipite vulgo breve 
vel subnullo radiatim aggregata, vel in stipite rarius elongato sparsim 
disposita, nunquam in penicillium agglutinata, plerumque 3-5-fida, rarius 
indivisa lineari-subspathulata, inferiora elongata superioribus longiora, 
rigida, anguste atque longe lineari-petiolata. petiolo basi dilatato, limbo 
obovato breviter unguicularim attenuato, profunde tripartito, lobis vulgo 
eleganter. divaricatis, lanceolato-vel elliptico-linearibus, obtusissimis 
parum in:qualibus; basilaria patula vel reflexa, grosse nervosa, petiolo 
basi plus minusve dilatato petiolata, limbo obovato vel cuneato profunde 
tripartito, lobis sublinearibus porrectis obtusis, medio lateralibus vulgo 
2-3-fidis atque externe divaricatis haud raro breviore; infrabasilaria patula 
vel reflexa, rarius stricta, sessilia vel subsessilia vel unguiculatim atte- 
nuata, cuneata, basi haud vel viz dilatata, 3-5-partita, lobis brevibus ellip- 
tico- linearibus. subdivaricatis obtusis, nervosa, nervis plus minusve 
prominentibus. Petala elliptico-vel obovato-oblonga, vulgo basi rotundata, 
alba, trinervia, nervis usque ad medium limbi valde luteolis vel virescentibus, 
circiter 4,5-5 mm. longa atque 2,5-3 mm. lata, laciniis calycinis ovato-vel 
elliptico-linearibus obtusissimis 1 x (2,5-3,0) longiora atque latiora. Styli 
atque stamina laciniis brevióra vel eas haud superantia. Capsula globosa 
subexserta stylis divaricatis coronata. Semina oblongo-ovoidea atrofusca, 
carinata, minutissime elevato-punctata. 
a. vulgaris Luiz. — Densiuscule cæspitosa, rosulis axillaribus sessilibus 
vel breviter stipitatis; caulibus floriferis 5-7 cm. altis, 7-10-floris. 
P. minor Luiz. — Dense cæspitosa, rosulis axillaribus sessilibus; caulibus 
foriferis 3,5-4,5 cm. altis, 5-7-floris. 
ï. Major Luiz. — Laze cæspitosa, robusta, rosulis axillaribus sessilibus 
vel breviter Stipitatis; caulibus floriferis 7-42 cm. altis, 8-10-ftoris; folia 
infrabasilaria reflexa. 
