LACIS CERATOPHYLLA. 
floralibus subconformibus, floribus inferio- 
ribus axillaribus superioribus subracemo- 
sis, corolle labiis subequalibus, calcare 
corolla breviore. 
Has. Graafreynet and Keurebooms 
river, Drége. (v. s.) 
ear N. melissefolia, but besides the 
above characters the capsule is shorter. 
VI. Dicris. 
Calyx 5-sepalus. Corolla personata, 
basi calcarata, labio superiore bifido, infe- 
riore trifido. Stamina 4, didynama, infe- 
riora longiora basi circumflexa. Anthere 
uniloculares per paria coherentes. Cap- 
sula subglobosa, emarginata, loculicido- 
bivalvis, valvulis integris vel vix fissis. 
Semina pauca ovoidea striata. —Herbe 
Austro-Africane. Caules repentes. Folia 
opposita, petiolata, lata, dentata. Pedicelli 
solitarii, axillares, uniflori, ebracteati 
1. D. reptans, uu subrotundis, basi 
truncatis cordatisv 
Has. Eastern — of the Cape 
Colony, on the Vanstaadensriviersberge 
and Zuureberge in Uitenhage, the Win- 
terberg in the Neutral Territory, and Kat- 
berg in Cafferland, Ecklon ; in the Ama- 
kosa and Amaponda countries, Drege. 
(v. s. 
Stems long, creeping, and often throwing 
out roots from the knots, and as well as the 
leaves are usually more or less pubescent, 
‘sometimes glabrous, and generally drying 
black. Leaves an inch broad, or rather 
more, crenate. Sepals oblong-linear, ly 
equal Corolla including the spur, about 
seven lines long; lower lip twice as long 
as the upper one. Capsule covered with 
glandular hairs, about the length of the 
calyx, and broader than it is long. 
2. D. ovata, diffusa, foliis late ovatis 
basi'cuneatis. 
Has. Madagascar. 
Hooker.) 
Flowers half the size of those of D. 
reptans. Capsule nearly glabrous. 
(v. s. in P 
LACIS CERATOPHYLLA. 
Tas. XX 
GEN. CHAR. Nat. Ord. — PoposTEMo- 
VEG. Rich. 
Flores spathacei, partibus appendicifor- 
mibus numero indefinitis. Stamina inde- 
finita (2—40), hypogyna, libera v. mona- 
delpha. Stigmata 2. Capsula striata, 
bilocularis, bivalvis. Semina numerosa, 
receptaculo centrali affixa——Herbe humvi- 
les aquatiles precipue tropice ; scaturi- 
gines rivulosque amantes, sazis rupibusve, 
imo et arboribus radicibus suis adnate, | 
plerumque submerse, Folia multipartita, 
laciniis sepe angustis. 
Lacis ceratophylla ; repens, caule fili- 
formi flexuoso, foliis multipartitis laciniis 
linearibus, floribus axillaribus solitariis, 
staminibus 2 filamentis monadelphis. 
(Tab. XX.) 
Lacis ceratophylla. Bongard, Gen. 
Lacis Revis. p. 10.  Podostemon cerato- 
phyllus, Mich. Am. v. 2. p. 164. 
Nutt. Gen. Am. v. 2. p. 202. 
Haz. Stony beds of rivers in the 
southern States of North America; Ohio, 
near Louisville, Michaux; Delaware, 
about Easton, T. Collins, Esq. ; Holston, 
Kenhaway, French Broad, and in the Ca- 
tawba river, near Morganton, North Caro- 
lina, Nuttall; Augusta, Georgia, Dr. 
Leavenworth; Brandywine, and various 
streams about West Chester, Pennsylva- 
nia, Dr. Darlington, Mr. Townsend ; Ra- 
pids of the Kentucky river, Dr. Short. 
Interested as I have long been in the 
vegetation of North America, I could not 
but feel desirous of possessing a plant 
which few Botanists were acquainted with 
except through the figure and description 
of Michaux, namely, his Podostemon cera- 
tophyllus, the only individual of the Order 
found in North America; the others being 
natives of the tropics, and chiefly of Brazil 
and Guiana, But it was long ere I could 
obtain a specimen, for its place of growth, 
attached to stones at the bottoms of rivers, 
had caused it to be overlooked : nor was it 
till I applied to my re d- 
ents, Dr. Short, of Ketik anit and Dr. Dar- | 
lington, of West Chester, that 1 received 
any. From those — I have been 
