• ' • v,C . 
D. LUIZET. CONTRIBUTION A L^ÉTUDE DES SAXIFRAGES. 87 
Le double rapprochement que l’on peut faire des formes des 
^ Sax. capitata Lap. et X Sax. ciliaris Lap. confirme, de la 
plus heureuse façon, 1 origine hybride de ces deux plantes. 
Diagnoses latines'. — x Saxifraga capitata Lap. a. pauciflora Luiz. — 
Laxe cæspitosa, caudiculis indeterminatis basi humifusis atque radican- 
tibus, apice erectis atque dense foliosis; caulibus floriferis 1-4 subtus rosu- 
lam fohorum terminalium atque rosulas stériles axillares nascentibus, 4-8 cm. 
altis, 1-4-ftoris. Folia majuscula glabrescentia, pilis sparsis plus minusve 
marginata, haud sulcata, nervis haud prominulis, limbo cuneato pro- 
funde tripartito, in^ petiolum attenuato, lobis lanceolatis 2-3-4-fidis, acutis; 
caulina sæpius 3-5-fida ; superiora, bracteæ atque prophylla linearia 
integra acuta. Scapi, pedunçuli, pedicelli atque calyces, pubescenti-glan- 
dulosi. Petala alba subelliptica, laciniis calycinis duplo longiora atque 
latiora, trinervia. Calycis laciniæ, tubo primum longiores, ovatæ, acutæ. 
Stamina atque styli lacinias valde superantia. 
— x Saxifraga capitata Lap. (J. S. Borderi G. Rouy et G. Camus. — 
Robustior caudiculis crassioribus minus numerosis, basi supinis, apice erectis 
atque laxe foliosis; caulibus floriferis subterminalibus, erectis , e basi panicu- 
lato-ramosis, 15-25 cm. altis, multifloris, pedunculis elongatis 1-S-floris. 
Folia majuscula glabrescentia, pilis sparsis plus minusve marginata, 
haud sulcata, nervis haud prominulis, limbo cuneato profunde tripartito, 
in petiolum planum attenuato, lobis lanceolatis 2-3-4-fidis, acutis; caulina 
atque bracteæ sessilia, profunde tripartita, lobis cuneato-lanceolatis, 2-3- 
fidis -vel integris acutis; prophylla lanceolata integra acuta. Gaules, pedun- 
culi, pedicelli atque calyces, glanduloso-pilosi. Petala alba obovato-oblonga 
laciniis calycinis duplo longiora atque latiora, trinervia. Calycis laciniæ 
ovatæ, acutæ, tubo æquilongæ. Stamina atque styli lacinias valde supe¬ 
rantia. 
/x Saxifraga ciliaris Lap. a. pauciflora Luiz. et Neyr. — Cæspitosa. 
caudiculis indeterminatis , basi supinis , apice erectiusculis atque dense foliosis, 
caulibus floriferis terminalibus vel subterminalibus , 4-6 cm. altis , 1-5-floris 
cymosis. Folia suprabasilaria glabra , sparsim ciliata, lanceolata ’obtusa vel 
obtusiuscula , basilaria cuneata in petiolum attenuata, tripartita, lobis ovato- 
lineaiibus integris obtusis vel obtusiusculis ; infrabasilaria cuneata subses- 
silia, tripartita, lobis integris brevioribus atque latioribus; caulina, ut 
bractea infeiior, sæpius sublinearia integra obtusa; prophylla linearia 
integra obtusa. Caules lloriferi, pedunçuli, pedicelli atque calyces, breviter 
glanduloso-pilosi. Petala alba vel luteo-albida subelliptica, laciniis caly¬ 
cinis duplo longiora atque latiora, trinervia. Calycis laciniæ triangulari- 
ovatæ, tubo æquilongæ, obtusiusculæ. Stamina atque styli lacinias supe¬ 
rantia. 
X Saxifraga ciliaris Lap. (3. S. Ramondii Luiz. et Neyr. — Cæspi¬ 
tosa, caudiculis basi supinis, apice erectis; caulibus floriferis terminalibus 
vel subterminalibus, 4-11 cm. altis, e basi vulgo ramoso-paniculatis vel 
corymbosis, 8-10 floris, pedunculis inferioribus remotis vel elongatis. Folia 
suprabasilaria cuneata in petiolum attenuata, plerumque apice triloba, 
lobis triangularibus obtusis, inferiora tantum lineari-lanceolata integra obtusa; 
basilaiia cuneata subsessilia, apice tripartita, lobis sublinearibus obtusis, 
