the limb of the corolla is 4-lobed whereas in Syncolosteman 
the limb is composed of two entire or only slightly 
lobed lips. The 3-partite lower lip of the corolla and 
the deeply 2-fid style separate Thorncroftia from Ortho- 
siphon. For the introduction of 7. longiflora to European 
collections, horticulture is indebted to the collector in 
whose honour it has been named. From seeds sent by 
him to Mr. R. Irwin Lynch, Curator of the Cambridge 
Botanic Garden, plants were successfully raised and have 
thriven best under the treatment as regards potting, 
soil and watering usual for succulent plants, though 
they succeed satisfactorily in any greenhouse or inter- 
mediate house with good light. Under cultivation 
I. longiflora forms a small shrub of loose habit with 
succulent leaves and is not particularly attractive save 
when in flower, when it is somewhat remarkable for the 
Jong slender tube of the corojla. For the material for 
our plate we are indebted to Mr. Lynch who supplied 
it from one of the plants which flowered at Cambridge 
in November, 1916. : 
Descrirtion.— Herb, perennial, densely puberulous throughout. Stems 
erect, up to 2 ft. high, branched, when young more or less red, ultimately 
rather woody. Leaves short-petioled, elliptic-lanceolate, obtuse, entire or 
obscurely sparingly toothed, cuneately narrowed into the petiole below, rather 
thick, including the petiole 3-3 in. long, up to 3 in. wide, densely beset with 
sunk glands. Verticillasters 2-flowered, forming racemes 1}~4 in. long which 
are grouped in a terminal panicle over 5 in long; nodes between the 
verticillasters {-} in. long. Bracts like the leaves, progressively smaller 
upwards, the highest very small, sessile. Pedicels 1-1 in. long. Calyx 
campanulate, 2-lipped, } in. long, enlarging and about } in. long in fruit, 
distinctly 10-nerved, beset with sessile glands; upper lip entire, ovate, 
acute, decurrent in the tube; lower lip 4-toothed with the teeth narrow 
deltoid, acute. Corolla pale rose, the lateral lobes of the lower marked with 
red ; tube straight, narrow cylindric, not enlarged at the mouth, 1-13 in. long, 
under 55 in. wide ; limb 2-lipped, beset with sexsile glands ; upper lip cuneate- 
obovate, emarginate, concave, }-2 in. long, about } in. wide ; lower lip 3-partite, 
the middle lobe elliptic, faintly keeled, the base clawed, 1-1 in. long, 4-} in. 
wide ; lateral lobes linear-lanceolate, acute, about } in. long, very narrow. 
Stamens 4, declinate, exserted ; filaments free, glabrous, 1-1 in. long; anther- 
cells ovoid, divaricate, confluent at their tips. Disk small, swollen in front. 
S tyle filiform, exserted, 2-fid. Nutlets somewhat trigonously obovoid, glabrous, 
slightly corrugated at the top. 
ne en 
Tas. 8824.—Fig. 1, a leaf; 2,4 flower ; 3, calyx, laid open, showing pistil 
and disk ; 4, upper part of corolla, showing stamens ; 5, upper part of corolla, 
laid open, showing stamens, the upper lip and the mid-lobe of the lower lip 
removed; 6 and 7, anthers with upper portion of filaments :—all enlarged. 
