OF THE GENUS ARENARIA. 425 
revocans. Differt a priori habitu, foliorum et sepalorum formá ac 
magnitudine, et coro!le defectu. E descriptione huie speciei 
affinis esse videtur etiam A. Alpamarce, que tamen differt foliis 
interdum non imbr eatis, ovato-lanceolatis mucronatis, 4-6 mm. 
longis, floribus longe pedunculatis, staminibus 5 nec 10, quique 
incertum est an ab A. nitida sat diderat. 
Hab. Bolivia, near Potosi. 
154. A. PycNoPHYLLOIDES, Paz, in Engl. Jahrb. xviii. p. 29 
(1893). 
Glabra. Folia lanceolata acuminata nitescentia subcoriacea, 
usque ad apicem dense ciliata, nervo mediano subtus valde promi- 
nente ciliato, su,.ra | lus minus concava. Sepala oblonga acumi- 
nata ciliata, late membranacea. Petala apice obtusa, minuta vel 
nula. Ovarium depresso-globosum ; styli 3. 
B. compacta, Paz, l. c. p. 29. 
A typo recedit ramis valle abbreviatis, dense imbricato- 
foliatis, cæspit: s humiles densas formans. 
y. Moritziana, Paw (sp.), l c. p. 30. 
A typo recedit ramulis inferne foliis delapsis nudis ; foliis et 
sepalis perglabris. 
The specimens on which this species is founded were identified 
with A. bisulea by Grisebach (Symbol. p. 26); but this plant has 
not the characte istic furrows in the leaves which distinguish 
A. bisulca, and tie ovary is much broader. 
Geogr. range.— Argentina, provs. of Rioja and Salta ; Colombia, 
Mt. Paramo de Muchuchia:. 
Syn. A. bisulea (non Rohrb.), Griseb. Symbol. p. 26. 
155. A. porrvia Na, Williams. 
Syn. A. conferta, Wedd. in Ann. Sc. Nat. sér. V. i. 1864, p. 293 (non 
Boiss. 1842). 
Caules multum ramosi, ramulis brevibus glabris. Folia 
oblongo-lancevlata, margine anguste membranaceo ciliata, cete- 
Tum glabra aut nervo mediano promiueute vel interdum toto 
dorso hispida. Sepala ovato-oblonga, margine anguste scariosa, 
aut duo prefloratione exteriora margine ciliata aut rarius omnia 
dense villosa. — Peta'a nulla. Capsula ovata, paullum infra me- 
dium in 3 valvas bifidas dehiscens. Semina minima lenticularia. 
