I
apicem versus attenuatis, basi '/ 700'" crassis, reotis apice terebriformi-
bus vel spiralibus. — In Ranúnculo aquatili aliisque plantis aquatiois
prope Berolinum.
b. Formae marinae.
R. nitida Ag. (Synops. et Syst. p. 23. FT. 3. Crouan Alg. mar.
du Finistère FT. 332! Desmaz. ed. I. FT. 807. Harv. Manual p. 152.
Phyool. Brit. T. 68. Physactis nitida Westend. herb. N. 1347 ! Rivul.
bullata Berkel. Gl. Alg. T. I I . J . Ag. Alg. mediterr. p. 9. FT. 3.
Physaotis bullata et lobata Ktz. Phyool. gener. p. 236. T. 4. F. Y.
Speo. p. 332. N. 2 et 4. Rabenh. Alg. FT. 571. Erb. oritt. ital.
N. 287. Mack. Flor. Hibern. p. 235.). E. vesiculoso-lobata, oonfluens,
nonnunquam expansa, obscure aerugineo-viridis, mollis, exsioeata durissima
; triohomatibus aerugineis, leviter flexuosis, e basi torulosa contin
u is, subabrupte in pilum plus minus elongatum flaccidum aohroum
acuminatis; articulis infimis oompressis, diametro plerumque duplo brevioribus,
granulosis; vaginis confluentibus achrois (nonnunquam basi
luteolis) ; cellulis perdurantibus globosis vel subglobosis hyalinis, articulorum
infimorum diametro aequalibus vel subaequalibus. v. v.
Diam. cell, infim. plerumque '¡m '" = 0,0004".
b. pilifera (Physaotis pilifera Ktz. 1. c. Eabenh. Alg. FT. 1508!),
trichomatibus abrupte in apioem piliferum attenuatis, vaginis in mueum
aohroum, rarius aureo-fuscum diffluentibus.
c. spiralis (Physactis spiralis Ktz. 1. c.), trichomatibus plus minus
spiraliter oontortis. Forma natura loci natalis, id est aestus maris vehe-
mentia produota.
Hab. in rupibus submersis ad oras europaeas.
R. plicata Carmich. (Harv. in Hook. Brit. Flor. II. p. 392. Harv.
Manual ed. IT. p. 222. Phyool. Brit. T. 315. Mack. Flor. Hibern.
p. 235. Crouan Alg. marin. du Finist. N. 333! Physaotis plioata Ktz.
1. 0. Westend. herb. FT. 1346 I Notice 7® p. 20. Lichen corrugatus
Dickson ex Harv.). R. parva, suborbioulari-expansa, plicato-corrugata,
saturate aeruginea (siooa atra et d u r a , humeotata cito molloscens, sed
parum intumesoens), plicis obtusis, varie ourvatis, lirelliformibus ; trichomatibus
gracilibus, pulchre radiantibus, plerumque rectis et strictis,
basi distinote articulatis , sursum suboontinuis, in apioem brevem piliformem
acuminatis; articulis vix torulosis, subtilissime granulosis; cellulis
perdurantibus globosis oblongisve, achrois luoidis, articulorum
infimorum diametro aequalibus vel paulo majoribus. v. s.
Diam. artio, inf. plerumque '/ 300'' 0,00029".
b. Forma vaginis in muoum lu te o -fuscum diffluentibus.
Hab. ad oras Angliae, Hiberniae, Hispaniae, Galliae et Beigli;
b. Cap Martin prope Mentone (Dr. Boettcher).
Species insignis, et habitu, et fabrica interna, trichomatibus gracillimis
primo in tu itu distinguitur. '
R. pulchra Cram, (in Rabenh. Alg. N. 1450. Hedwigia 1863.
p. 62.). E. subglobosa, confluens, obscure aeruginea, plicata, intus
cava ; trichomatibus aerugineis, dense aggregatis subgracilibus, reotis,
vel leniter cu rv atis, in apioem piliformem flaccidum dilute coloratum
vel subachroum acuminatis, distinote artioulatis; articulis vix tumidis,
infimis diametro duplo triplove brevioribus, omnibus homogeneis; vaginis
in muoum matrioalem diffluentibus, achrois vel luteo-fusois (in uno
eodemque thallo) ; cellulis perdurantibus globosis decoloratis, articulorum
infimorum diametro paulo majoribus.
Diam. art. inf. plerumque = 0,00047", cell. perd. ' ¡ w f
= 0,00061".
Hab. ad litus prope „ Palermo “ (C. Cramer).
S p e c i e s m i h i n o n s a t n o t a e .
R. durissima (Physactis durissima Ktz. Phyool. germ. p. 186.
N. 3.). E. minima (magnitudine seminis papaveris), saturate aeruginea,
nigrescens, globosa, d u rissim a , elastica ; trichomatibus basi ‘/oso'" crassis
, dense aggregatis ; vaginis achrois, maxime pellucidis. — In Ce-
mamio rubro prope Dobberan legit beat, de Elotow.
R. aggregata (Physaotis aggregata Ktz. in bot. Zeit. 1847. p. 178.
N. 149.). E. aerugineo - atra, minuta, lenticularis; trichomatibus densis
turgidis (diam. ‘/soo —■ '¡ iw '“) , ouspidatis, basi subtorulosis. (Diam.
thalli ‘/H"')- — In mari boreali leg. Jiirgens.
R. botryoides Carmich. (in Harv. Manual p. 150.). R. minuta
aggregata, ro tundata, rugosa, ferruginea, cartilaginea; trichomatibus
dichotomis. — In rivulis Angliae.
R. atropurpúrea (Physaotis atropurpúrea Ktz. Osterprogr. p. 9.
N. 20.). E. plana, irregulariter orbicularis, a tra ; trichomatibus laxe
dispositis, reotis, strictis, cito acuminatis, piliferis, amethystinis, apice
aohromaticis. — In Phyooseri gigantea ad Cherbourg leg. Le Jolis.
S p e c i e s m i h i n o m in e t a n t u m n o t a e .
Physactis Lloydii Ktz. Osterpr. N. 21. (Rivularia Balani Lloyd)
ex Ktz. — In Balanis.
Ph. obducens Ktz. (1. 0.). — In Laurencia obtusa.
R a b e n h o r s l , Flora Europaea. II. l 4
m