Bonatea. | CXXXIII. ORCHIDEX (ROLFE). 253 
1. B. Steudneri, Durand & Schinz, Conspect. Fl. Afr. v.90. Stem 
strong, 3-5 ft. high. Leaves oblong, acute, with a cartilaginous 
margin, decreasing upwards into the bracts. Racemes lax, about 20- 
flowered. Bracts oblong, acuminate, cucullate, 1 in. long. Pedicels as 
long as the bracts. Dorsal sepal free, oblong, apiculate, arched, 10 lin. 
long; lateral oblong-triangular, adnate below to the base of the lip 
and stigmatic processes, obliquely triangular above, 14 lin. long, 5 lin. 
broad. Petals bipartite; posterior lobe linear, acute, with a very 
shortly ciliate margin, cohering with the dorsal sepal; anterior lobe 
linear, acuminate, much shorter than the posterior. Lip tripar- 
tite; lobes linear, acute; spur cylindrical, as long as the pedicels. 
Stigmatic processes terete; apex very broadly spathulate, porrect, 
Anther channels elongate, straight. Rostellum cucullate, fornicate, 
apiculate, limb very setulose.— Habenaria Steudneri, Reichb. f. Otia 
Bot. Hamb. ii. 101; Kriinzl. in Engl. Jahrb. xvi. 57; Engl. Hochgeb. 
Fl. Trop. Afr. 179. 
Nile Land. Eritrea: Bogos; Keren, Steudner, 700. British East Africa: 
Ukamba ; Kitui, Hildebrandt, 2652. - 
Only known to me from the original description. Reichenbach says that the type 
is at Berlin, where, however, Kränzlin has been unable to find it. 
2. B. rabaiensis, Rolfe. Plant 10 in. high. Stem very stout, 
leafy below the middle. Leaves about 3, oval or ovate, with a sheathing 
base, 1ł—4 in. long. Racemes lax, few-flowered. Bracts membranous, 
acuminate, nearly 1 in. long. Pedicels 1} in. long. Flowers among 
the largest of the genus. Dorsal sepal ovate, subacute, cucullate, 8 lin. 
long ; lateral oblique, oblong, with a falcate-apiculate apex, 9 lin. long. 
Petals bipartite ; posterior lobe linear, cohering to and about as long as 
the dorsal sepal ; anterior lobe 14 lin. long, filiform below, falcate above, 
with recurved, almost aristate tip. Lip trilobed; lobes filiform, much 
like the anterior lobes of the petals ; side lobes 14 in. long; front lobe 
1 in. long ; spur cylindrical, stout, 1} in. long, slightly narrower below. 
Stigmatic processes elongate, thickened above the middle and verrucose, 
slightly recurved near the apex, 8 lin. long. Anther apiculate, a little 
shorter than the rostellum ; channels slender, suberect, 4 lin. long. 
Rostellum cucullate, with a strong projecting apiculus.—Habenaria 
rabaiensis, Rendle in Journ. Linn. Soe, xxx. 390. 
Nile Land. British East Africa: Rabai Hills, near Mombasa, Taylor ! 
3. B. volkensiana, Rolfe. A stately plant, 2-2} ft. high. 
Leaves 3} in. long, 1} in. broad, decreasing upwards into the bracts. 
emes long, many-flowered. Pedicels about 14 in. long. Flowers 
white. Dorsal sepal oval, acute, galeate, 7 lin. long ; lateral deflexed, 
oblong, subacute, adnate below to the base of the lip and stigmatic pro- 
cesses. Petals bipartite ; posterior lobe linear-lanceolate, acuminate, 
appressed to the dorsal sepal, pellucid; anterior lobe linear, very 
acuminate, 1 in. long. Lip tripartite ; side lobes similar to the anterior 
lobe of the petals but a little longer ; front lobe linear, acute, rather 
shorter than the side lobes; disc with a small, erect, acute tooth in 
