119 
A Pilotricho amhiguo differt: foliis longe aciiminatis sernilatis; 
' a P. auronitente statura augustiore elongata, ramis pendiilis, nec 
brevibus secundis. 
11. P. auronitens Hornsch., Fl. Brasil. ibid. 
In vicinia Eio de Janeiro; Glazion (4525, 4551); primus 
Martins; adliuc solum sterile notum. 
e. Pi nnat e 11a C. M. Insertæ sedis. 
Transit ad sectionem Callicostellæ. 
Fere omnia adhuc sterilia, exclusa Neckera elegantula Griffith., 
lierbar. 21 (a me visa). 
12. P. Thieleanum C. M., Syn. II, pag. 227. Syn. P. pinni- 
forine Fl. Brasil. I, pag. 57. 
Hab. Brasiliæ: Sello; e Monte Video accepi. 
13. P. microthamnium Hpe, 
Minus; surculus stolonifer, radicans. Caulis adscendens vix 
uncialis, basi squarroso-foliatus, superne coma pinnatim ramosa, 
arbusculiformi, vel flabellata, semicirculari vel lanceolata, ramis 
ramulosis 2—3"' filescentibus attenuatis. Folia caulina reflexo- 
patula, basi impresso-concava, amplexicaulia reniforme-cordata subito 
caniculato-acuminata, enervia, cellulis alaribus parvis, ovalibus, 
cæteris anguste ellipticis, omnibus pellucidis; folia ramorum accum- 
bentia basi latere plicata, cordata, breviter acuminata, subintegerrima, 
nervo lutescente percursa, cellulis dense aggregatis rotundatis, 
granulatis, pellucidis. 
In vicinia Rio de Janeiro, sine numero: Glazioii. 
Stirps juvenilis, nec cum Tamariscellis commutanda. 
14. P. tenuicostata Hpe. 
Surculus repens; caulis humilis, adscendens distiche pinnatim 
ramosus, pallide lutescens. Folia caulina inferiora breviora, superiora 
longiora, oblique inserta, subdistiche patula, cymbiformiter concava, 
margine erecto, e basi parum latiore elliptico ligulata, acuta, 
sursum serrulata; neiTO tenui superne (V 4 ) evanido; cellulis dense 
seriatis brevibus parallelogrammicis, nodulis parvis scabridis inter- 
