SYSTEMATIC BOTANY. 7 
These characters lead you in the key to the order Crucifere, but it is not easy to decide 
farther, because you have not the fruit. Look for the pods a few weeks later, and you 
will find them long and flat, as represented in the 
figure at ¢ on the left. You can then determine 
the name of the plant. The seed pods here 
figured will help you in determining some of the 
plants in this order. 
The curious flower depicted below is another 
early bloomer. You must cut the flower open 
and study it carefully. The four—sometimes 
five—petals are joined together, and bear upon 
the short tube the four stamens which hug the 
pistil tightly and form a beak like that of a bird. 
The ovary does not adhere to the calyx, and if a 
seed pod is partly grown, it will be easy to see 
that the seeds grow upon a central placenta. 
Turning to the key you are called upon to de- 
cide whether the stamens are opposite the lobes 
of the corolla or not. They certainly are op- 
posite, so the order Primulacez is evidently 
where our plant belongs. The pretty little for- 
eigner Anagallis is here figured, and it will be 
Uprer Fic.—a, indehiscent 
pod of Raphanus Raphanis- 
trum; b, pod (silicle) of Cap- 
sella Bursa-pastoris; c, pod of 
Capsella divaricata; d, pod Ze 
(silique) of Tropidocarpum, 
flattened contrary to the parti- 
tion; e, pod of Cardamine pau- 
cisecta, flattencd parallel with the partition (septum); 7, two pods (silicle) 
of Lepidium nitidum, and two partitions from which the valves have fallen, 
showing that there was one seed in each cell; g, pod of Lepidium latipes, 
showing the broad pedicel which suggested the specific name; A, a branch 
of Thysanocarpus pusillus, with four of its l-seeded pods; i, one of 
the pods magnified to show the hooked hairs; j, pod of Thysanocarpus 
curvipes. 
Lower Fia.—c, reflexed petals of Dodecatheon Meadia; f, filaments; a,“ __...... f 
anthers: s, stigma (not always protruding); 7, involucre; p, scape (radical 1 
peduncle), The horizontal figure represents a rather small branch of Ana- $ 
gallis arveusis. 
