186 DR. J. D. HOOKER ON THE PLANTS 
graciliter petiolatis oblongo-lanceolatis acuminatis cuspidato-serratis, 
pedunculis folio longioribus, floribus breviter racemosis, sepalis late 
ovatis, vexillo galeato, labello infundibuliformi in calcar robustum 
apice inflatum contracto, alis parvis. 
Hab. Cameroons Mountains, alt. 7000 feet. (Fl. Nov.-Jan.) 
Species pulcherrima, elata, 8-pedalis, ramosa?, inferne glabra, apicibus 
ramorum petiolis pedunculis basi foliisque junioribus subvillosis. Folia 
1-4 unc. longa, in verticillo 3-6, petiolis 4-3 unc. long., patentia, 
membranacea, glaberrima v. pilosula, crenato-serrata, crenis apice v. 
prope apicem setosis. Pedunculi validi, valde elongati, rigidi, 4-10- 
flori. Bractee ovate, acuminatz, herbacez, persistentes. Pedicelli 
j-l unc.longi. Flores coccinei? Sepala bracteis similia, viridia, her- 
bacea. Vexillum tumidum, valde concavum, obtusum, dorso apicula- 
tum, lateribus productis. Labellum cum calcari 2 unc. long., cal- 
cari in apicem pyriformem 2-lobum tumente. Ale lineares, vexillo 
vix longiores, porrectz, flavo et purpureo ut videtur colorate. Cap- 
sula 3 unc. longa, ovalis, medio turgida, utrinque attenuata. 
Named in compliment to the Rev. Mr. Saker, Mr. Mann's com- 
panion in his ascent of the Cameroons Mountains, and to whom 
he is much indebted for the success of his enterprising journey. 
2. UMBELLAT#. Folia alterna. Flores ad apicem pedunculi elon- 
gati, subumbellati. 
2. IMPATIENS FILICORNU, H. f. (ante, vi. 6). 
Hab. Fernando Po, alt. 4000-5000 feet, Sierra del Crystal. (Fl. Dec.) 
3. IMPATIENS MACROPTERA, H. f., n. sp. Glaberrima, caule crasso 
erecto nodoso, foliis apicem versus caulis alternis petiolatis ovatis 
acuminatis grosse crenatis inter cremas setiferis, pedunculis axilla- 
ribus elongatis erectis 2—4-floris, bracteis sepalisque ovatis acutis, 
pedicellis breviusculis, floribus magnis, vexillo parvo orbiculato pur- 
pureo, labello late oblique conico, calcari brevi incurvo, alis maximis 
pendulis oblongis obtusis. 
Hab. Fernando Po, alt. 4500 feet. (Fl. April.) 
Herba 2-4-pedalis. Caulis nodosus. Folia (cum petiolo glaberrimo) 3-4" 
longa, superne sub lente fasciculis subcutancis raphidum notata. 
Pedunculi folia superantes. Bractee et sepala consimilia, 4” longa. 
Pedicelli 1” longi. Flores 2-21" longi, albi et virescentes (ez Mannio). 
Vexillum ut videtur ex sicco violaceum. 
4. IMPATIENS PALPEBRATA, H. f., n.sp. Parvula, pilosula, caule 
simplici paucifoliato, foliis graciliter petiolatis anguste oblongo-ovatis 
cordatis grosse crenatis crenis infimis longissime ciliolatis, scapo 
longissimo tenui apice florifero, bracteis minutis, pedunculis brevius- 
culis, sepalis majusculis, vexillo breviusculo, alis elongatis stipitatis, 
