XIX 
2-celled. Fr. capsular.—One part of the pis of this family, 
probably all the Rhinanthese (genera 426—432: cells of anthers 
prolonged to a point at the base) are parasites on the roots 
of other pis, they have green Is which easily become black; 
(radical Is often 0). The genus Lathrsea which was formerly 
included in Orobanchacem is, like these, furnished with scales 
instead of Is and has a 1-seeded capsule. 
77. Orobanchaceae. Cor. bilabiate, persist. Stas 4, didyna- 
mous. Ovary and caps. 1-celled. Placentas parietal.—Leafless 
parasitic pis. 
80. Lentibulariaceae (Utricularese). Cor. bilabiate, spurred. 
Stas 2. Anthers 1-celled. Fr. capsular, 1-celled, many-seeded. 
Ovary with free central placentas, many-ovuled as in Primu- 
lacese.—Aquatic or marsh pis. 
78. Labiatae. Cor. gen. bilabiate, rarely 1-lipped or with 
nearly equal divisions. Stas 4, 2 longer and 2 shorter, rarely 
(Salvia) only 2. Style basal. Fr. separating at maturity into 
4 1-seedednutlet s.—Ls opp. FIs in 2 opp. clusters (cymes with 
very short axes) so called verticillasters. Fr. formed as in Bora- 
ginece but cor. irreg., stas didynamous and Is opp. Cl. 14. 
79. Verbenaceae. Style terminal, otherwise as above. 
82. Globulariaceae. Cor. bilabiate Stas 4. Fr. dry, 1-seeded, 
indehisc. FIs united in a capitulum surrounded by a com¬ 
mon involucre. 
0 Stas opp. and equal to cor.-lobes. 
83. Plumbagineae. Ovary with a single ovule suspended 
from the top of a central funicle. Styles 5, united at the base. 
Fr. an indehisc. utricle. 
81. Primulaceae. Ovary with free central placentee, many- 
ovuled. Style 1. Fr. capsular. Samolus has a half inf. ovary. 
Apetalae. *) 
f The absolute male fls never in catkins. 
§ Ls several together in whorls. — Fr. 1-seeded, inde- 
hiscent. Water pis. 
36. Hippuridese. Fls hermaphrodite. Perianth sup., indis¬ 
tinct. Sta. 1.—Ls undivided. 
38. Ceratophyllaceae. FI. monoecious. Perianth inf., multi¬ 
partite. Stas numerous.— Ls several times dichotomous. 
*) This division is more artificial and should be regarded as consisting 
of the apetalous elements of different families, especially of the division Poly- 
petalse.—Among bypog. Polypetal® several Ranunculaceae and some Alsinacese 
and Crucifer* are apetalous; among perig. Polypetal® : Peplis, Isnardia, 
Chrysosplenium ; among hypog. Monopetalse: Fraxinus excelsior; among 
perig. Monopetalee: Xanthium (fern. fl.). 
