COLLECTED IN TROPICAL AFRICA. 
5.*. 
P. sciophyllus, Mitten. Monoicus, statura F. bryoidis; foliis patentibus oblongo-cllip- 
ticis latiusculis acutis, nervo pallido percurrente, lamina vera fed medium product a, 
omnibus laminis immarginatis tenuiter crenulatis, cellulis opacis; tlieca in podun- 
ulo gracillimo ovali subaequali siccitate urceolata ; florc masculo in apicibus 
ramoi 
Hab. Interior of Africa (Mungo Park) . 
Nearly allied to F. opacifolius, but tl 
Hornschuch 
but the structure of the leaves is not the same. 
Tab. VI. fig. 13. 1. Plant (natural size) ; 2. the same, 3. leaf (magnified). 
F. curvifolius, Mitten. Dioicus? humilis, gracilis; foliis plurijugis patent ibus falcato- 
curvatis elliptico-lanceolatis, nervo pallidiore sed obscuro percurrente, lamina vera 
supra medium producta, lamina dorsali in caulcin decurrente, omnibus laniinis 
immarginatis tenuissime crenulatis integerrimisve, cellulis minutis obscuris diametro 
circiter stftnn n/oo uncias mensura; tbeca in pedunculo gracili luteo? ovali ineli- 
nata, operculo subulato. 
Hab. On the earth. Niger ( Vogel) . 
Almost intermediate between the species which, without any margination to the apical lamina, have 
their leaves entire or crenulate; in the present the crenulation is indistinct, but the cells, although obscure, 
are distinguishable, and, together with the form and flexure of the leaves and inclined capsule, distinguish 
it from its allies. 
Tab. VI. fig. 14. i. Plant (natural size) ; 2. the same, 3. leaf (magnified). 
r. ripensis, Mitten. Caespitosus, caule elongato ; foliis patentibus siccitate parum mutatis 
ligulato-lanceolatis acutis, nervo percurrente, lamina vera ad medium producta apic< 
maBquali, lamina dorsali basi contracta, omnibus laminis immarginatis tenuiter 
crenulatis, cellulis distinctis diametro circiter 2~ooo nncise metientibus. 
Hab. On moist rocks. Niger {Barter). 
This appears to be the largest known species belonging to the group with immarginate crenulate 
leaves, and is easily known by its distinct and pellucid areolation. 
Tab. VI. fig. ]5. i. Plant (natural size) ; 2. portion of stem and leaves (magnified). 
*-* 
F. gladiolus, Mitten. Dioicus ? humillimus, parvulus ; foliis circiter trijugis anguste 
lanceolatis sensim angustatis acutis, nervo intensius colorato percurrente, lamina 
jra ad medium producta, omnibus laminis immarginatis integerrimis, cellulis elon- 
itis laxiusculis distinctis ; foliis pericba3tialibus lamina vera apice inaequali, 11110 
latero libero ; tbeca in pedunculo gracillimo ovali inclinata, operculo brevirostrato. 
Hab. Interior of Africa {Mungo Park). 
This minute slender species is remarkable for its narrow, loosely areolate leaves. The whole plants 
are about three lines hish. 
c 
Tab. VI. fig. 16. i, pi an t (natural size) ; 2. the same, 3. leaf (magnified). 
