IO2 



PATAGONIAN EXPEDITIONS I BOTANY. 



7 cm. altus, inferne costis limbisque persistentibus foliorum vetustorum 

 obtectus, remote ramosus, non rare 2-3 furcatus vel interdum remote fas- 

 ciculatim ramosus, ramis erectis, simplicibus ; folia oblonge ovata, sub- 

 acuta, heteromalla, leviter concava, fere plana, humiditate e basi patentis- 



FIG. 24. 



Sciaromium depastum Dus6n. a, folia, JjS. ; b, cellulae apicales, ^9- ; c, cellulse basales, 



sima leviter incurvata, siccitate magis inflexa, c. 1.25 mm. longa et 0.62 

 mm. lata, integerrima, carinato-nervosa, nervo valido, basi c. o. i mm. 

 crasso, laevissimo, percurrente, crasse limbata, limbo circumducto, ad 

 medium folii c. 0.07 mm. lato ; cellulae parvae, obscurae, omnino sub- 

 rectangulae. 



Flores fern, in parte superiore caulis dispositi, parvi, gemmiformes, 

 archegoniis sat paucis, paraphysibus paucis, setaceis, flavis, cetera ignota. 



Hab. Fuegia australis ad Villarino. 



An excellent species, well distinguished from all the other South Ameri- 

 can species of the same genus by its straight stem, heteromallous and 

 patent, not falcate, and neither subulate nor aristate leaves. 



SCIAROMIUM GRACILE Dusen n. sp. 



PI. XI, Fig. 6. 



Caulis gracilis, strictus vel strictiusculus, usque ad 5 cm. longus, in- 

 ferne pallide brunneus, nervis foliorum vetustiorum resistentibus vestitus, 

 superne foliatus viridis, subsimplex vel vage et remote distichaseo-ra- 

 mosus, ramis simplicibus, turn brevibus, turn sat longis ; folia patentia, 

 homomalla, c. 1.5 mm. longa et 0.40-0.45 mm. lata, densiuscula, haud 

 decurrentia, e basi ovata sensim attenuata, elongate cuspidata, paulum 

 concava, elimbata, marginibus integerrimis, erectis ; nervo robusto, viridi, 

 basi 0.12-0.15 mm. lato, paulum supra medium folii excurrente, cuspi- 

 dem crassiusculam formante ; cellulce parvae, angustae, subelongatae, ob- 

 scurae, basales ceteris paulum breviores et laxiores ; cetera ignota. 



