e 
Plantae novae andinae imprimis Weberbauerianae. V. 449 
(WEBERBAUER n. 1042. — Specimina florigera fructiferaque 16. Maii 1902. 
— Herb. Berol.). 
Arenaria caespitosa Muschler n. sp.; annua; radix parva simplex, 
albido-flava, flexuosa densiuscule barbellata, recte descendens. Caules 
diffusi, debiles procumbentes, 3—6 cm longi, inferne teretes, superne sul- 
cati vel subquadrangulares, ramosi, ramis oppositis teretibus vel angulatis, 
altero saepe minore vel abortivo, glaberrimi vel interdum juventute leviter 
pubescentes, pilis minimis plus minus densis subuncinato-reflexis. Folia 
opposita, linearia vel lineari-lanceolata, rarius ovato-lanceolata, carnosula 
vel membranacea, internodiis plerumque multo longiora aut raro sub- 
aequantia, apice acuminata vel submucronulata, ad basin sensim angustata et 
subpetiolata, 5—10 mm longa, 2—4 mm lata, superiora sensim decrescentia, 
aut punctulata et ad nervos basinque tantum puberula aut plus minus 
scabriuscula. Flores solitarii, axillares, longe pedunculati, pedunculo fili- 
formi, 15—20 mm longo, patente, dense pilis minimis simplicibus unicellu- 
laribus albidis obtecto vel rarissime glabro, fructifero apice sursum curvato. 
Calycis lobi ovato-oblongi acuminati submucronati, carinati, carina viridi 
pilis brevibus scabriuscula, margine interdum eiliato late scariosi, 3—4 mm 
longi, 1—1,5 mm lati; petala alba, oblonga vel ovalia obtusa, integerrima, 
aut calyce paullum longiora aut eo breviora raro nulla, stamina 10 petalis 
paullum breviora, filamentis lineari-capillaceis disco perigyno inserta, disci 
glandulis membranaceis; antherae pallide croceae. Ovarium subglobosum, 
in ipso flore per valvas sex dehiscens; styli 3 capillacei. Capsula ovato- 
oblonga, calyce, corolla staminibusque persistentibus obtecta, subcartilaginea. 
calycem paullum superans, raro eo brevior, 6-valvis supra medium dehis- 
cens, oligosperma. Semina sphaeroideo-lenticularia aterrima laevia nitida. 
Peruvia: provincia Cajatambo prope Ocros in formatione »Cordillera 
negra« dicta (WEBERBAUER n. 2796. — Specimina florigera fructiferaque 
6. Aprilis 1903. — Herb. Berol.). 
Arenaria Engleriana Muschler n. sp.; perennis pulvinaris; radix 
longiuscula, cylindrica, subcrassa, 5—12 cm longa, 2— 4 mm diametro, 
sublignosa, plerumque simplex ac non barbata, cortice crassiusculo e cinereo 
subvirescente non vel minutissime rimuloso-reticulato vestita, axi lignoso 
pallide subflavescenti-albido donata. Caules diffusi, debiles, procumbentes 
sed nonnunquam radicantes, 3—6 cm longi, inferne teretes, superne evi- 
denter sulcati vel subquadrangulares, ramosi, ramis oppositis teretibus vel 
angulatis, altero saepe minore vel abortivo, glaberrimi vel plerumque juven- 
tute leviter pubescentes, pilis minimis plus minus densis subuncinato-reflexis, 
unicellularibus, albidis obtecti. Folia opposita, lanceolata vel ovato-lanceo- 
lata vel rarissime lineari-lanceolata, carnosula vel rarius. membranacea, 
internodiis plerumque multo longiora aut raro subaequantia, apice acutis- 
sima vel mucronulata, ad basin late truncata, sessilia, 5—10 mm longa, 
2--5 mm lata, superiora sensim sensimque decrescentia, aut punctulata et 
