75 
-fuscula; asei oblongo-ovoidei, 8-spori; sporae hyalinac, 9—11y 
longae, 3—4 u latae, cuneato-obovoideae, medio 3-seplatae, — 
In cortice Bonplandiae trifoliatae (ad specim. Feeana). 
1093. Arthıonia pyrenuloides Müll. Arg.; thallus einereo-albidus, 
tenuissimus, laevis; apothecia Em mm, lata, sessilia, hemi- 
sphaerica, ambitu orbicularia v. hinc inde obsolete tantum irre- 
gularia, nigra et nuda, opaca; epithecium erassum, nigro-fuseum ; 
lamina fuseidula; asci oblongato-ovoidei, superne angusliores, 
6—8-spori; sporae 16—21 „x longae, 5—5?/, » latae, obovoideo- 
dactyloideae, utringue oblusae, medio leviter aut non constrictae, 
4-loculares, loculi subaequales. — Prima fronte speciem par- 
vulam Arthopyreniae refert et etiam forma ascorum fereque spo- 
rarum cum Arihopyrenia puncliformi convenit, sed Lichen est ar- 
thoniaceus, prope A. palmicolam systematice disponendus. — 
Corticola prope Lydenburg in Transwaalia: Dr. Wilms (comm. 
Dr. Lahm, n. 55). 
1094. Arthonia oblongula Müll. Arg.; thallus albissimus, per- 
tenuis, evanescens; apothecia '/,—'/, mm. lata, ex elliptico 
3—5-Llo longiora quam lata, arcuata v. subrecta, hinc obsolete 
bifurcata, nigra, subnuda, madefacta medio longitrorsum fusco- 
pallescentia, leviter emergentia; epithecium olivaceo-virens, 
utringue obscurius; lamina cum hypothecio hyalina; asci sub- 
globosi, 8-spori; sporae hyalinae, 14—18 u longae, 51/,—6 u la- 
tae, dactyloideo-obovoideae, utrinque late obtusae, regulariter 
4-loculares. — Habitus ut in A, epipasia et A. excipienda, sed 
sporae ut in A. astroidea et thallus nitide albus. — Corticola 
prope Lydenburg in Transwaalia: Dr. Wilms (comm, Dr. Lahm 
sub n. 66). 
1095, Arthonia angulosa Müll, Arg.; thallus albus, tenuis, 
laevis; apothecia '/ „—'/, mm. lata, depauperatim astroideo-angu- 
losa, irregularia, carneo-fusca, siceca fusca, nuda, subplana; epi- 
theeium fuscidulum, reliqua laminae hyalina; asci subglobosi, 
8-spori; sporae hyalinae v. demum rufidulo-hyalinae, 20—24 u 
longae, 7—9 u latae, oblongato-ovoideae, 5-loculares, !oculus 
superior reliquis latior et multo longior. — Extus A. Antillarum 
simulat, sed gracilior et multo obseurior, aut A. confertam Nyl., 
sed sporarum loculus superior reliquis major. — Corticola prope 
Lydenburg in Transwaalia: Dr. Wilms (comm. Dr. Lahm sub 
n. 62). 
1096. Arthonia variabilis Müll, Arg.; thallus albidus, tenuis, 
laevis, continuus; apothecia cire. '/, mm. lata, ambitu insigniter 
