RHINANTHACEAE 
Corolla seemingly papilionaceous, the 
tube gibbous at the base posteriorly : 
posterior stamen represented by a 
callose knob: capsule slightly hat- 
tened : sepals partly united. 
Capsule. opening by transverse loculicidal 
ruptures: seed duod. ridged, or winged: 
corolla yellow or violet-blue, bilabiate, 
Dn a narrow pouch or spur at the base 
nteriorly: leaves alternate. 
B. RE the ES OE lobes external—overlapping in the 
ud: herbs.— (Rhinanthoideae 
Stamens 2, the postero-late fai alone present: corolla 
m "e -5 mm. long), e antero-lateral lobes exter- 
plants not parasitic. 
Scd a the antero- pense usually the longer: corolla 
lar the mid-anterior lobes usually external: 
Dres usdallv root- ura dae 
Sebals 5, alike: pes BAL nearly equally distinct. 
Sepals unequal, the rior one very short or lack- 
ing: corolla Bonds ‘bilabiate the 2 posterior lobes 
united nearly to the ap 
r PAULOWNIEA 
Tree, with cordate leaf-blades, dd panicles of horizontal 
flower ‘S, and erect pointed capsules 
II. GRA 
Leaves alternate: stamens 5: corolla oa pop white. 
nb opposite: stamens 4 or 2 (the posterior one obso- 
Leaf-blades entire or toothed: seeds brown or yellow. 
orolla Du due deos to the antero-lateral sinuses 
low not projecting beyo nd those points 
(ABIT filaments simple) : posterior dE of 
Hc corolla, little if at all, Shorter the 
nterior. 
esac uniform: capsule turgid, longer than wide, 
acute or obtuse : stem elongate. 
Sepals : corolla rotate, B recurved Jobes 
Sepals 5: corolla c aac aula tubular, or sal- 
verform, the lobes equalling or shorter 
he tube. 
Corolla campanulate, nearly regular; lobes 
equalling, or little shorter than the 
tube, the posterior pert a little if at 
e t 
St 4: capsule AE or ovoid, 
nearly equalling the sepals: outer 
sepal ova 
Stamens 2: capsule ellipsoid- Do 
much shorter than the se 
outer sepal of an Orbicuimis chua te 
t 
peu bibracteolate : capsule acute. 
o pubescent in the throat: 
ed surrounde y a circle of 
bristles: outer sepal cordate: leaf- 
blades clasping: plan emon- 
scented. 
Corolla glabrous within: ovary not 
surrounded by bristles: outer sepal 
ovate: leaf-blades PEE at the 
Bs 
base: ane odorles 
Corolla narrowe decide edly. zygomorphic, 
the lobes M than the tube, the 
posterior united over half their length 
or throughou 
Corolla tubular ‘or tubular- campanulate, 
relatively broad at the throat, 
paper cent within at the pus of 
the posterior lobes: capsule 
septicidal, or secondarily (in 
Gratiola) also loculicidal: leaf- 
blades toothed. 
1183 
VIII. COLLINSIEAE. 
IX. ANTIRRHINEAE, 
X. VERONICEAE, 
XI. BUCHNEREAE. 
XII. RHINANTHEAE. 
1. 
PAULOWNIA. 
2. CAPRARIA. 
m 
c 
5t 
. SCOPARIA. 
MACUILLAMIA. 
. HERPESTIS, 
. HYDROTRIDA. 
BRAMIA, 
