74 Addisonia 



\nsitant. The capsule is one third of an inch long, globose-pyra- 

 midal, obtuse, and pubescent with short gland-tipped hairs. The 

 minute seeds, only about one fortieth of an inch long, are oblong, 

 ridged, brown. 



The type of this new species was collected on a moist bank at 

 Chipaque, Department of Cundinamarca, Colombia, at an altitude 

 of about 8700 feet, August 23, 1917, my number 1320, and is pre- 

 served in the herbarium of the New York Botanical Garden. 



This plant is apparently a native of the upper eastern slopes of 

 the Eastern Cordillera of the Andes; it was also collected by me at 

 Ubague; and it is cultivated in gardens, in Colombia. 



This, our first species to be illustrated in Addisonia, shows well 

 the complexity of organization of the flower of Fagelia, or, as it has 

 long been known, Calceolaria. It is diJB&cult in such a corolla to 

 see any vestige of an original series of five petals; moreover the 

 stamens are not only reduced in number from five to two but these 

 two are modified into an excellent mechanical device to bring about 

 cross-pollination. That the complexity extends to other parts 

 of the plant structure is show^n by the paired terminal flowers 

 (perhaps axillary by the suppression of two internodes), an inflores- 

 cence far removed from the indefinite racemes of simple axillary 

 pedicels general in the figwort family. Its whole structure tells us 

 that Fagelia is one of the most evolved of figworts, and that this 

 section of Fagelia, possessing such divided anthers, is the most 

 advanced of this large genus. 



There are very many species of slipperworts, occurring in 

 much diversity and abundance throughout the Andes mountain- 

 system, with outlying species northward to southern Mexico, and 

 in New Zealand. The genus is singularly plastic, and, as with the 

 beard-tongues in North America, the mapping of the ranges of its 

 different species will certainly give us a sensitive test for deciding 

 areas of plant distribution. 



Our illustration has been made from a plant grown at the New 

 York Botanical Garden, from seed taken from the type specimen. 



Francis W. Pennsi.Iv. 



Explanation of Plate. Fig. 1. — Flowering stem. Fig. 2. — Corolla bent 

 back to a flat position, and with main portion of pouch removed, X 2. Fig. 3. — 

 Stamens and base of corolla, X 3. Fig. 4. — Calyx and immature capsule, X 2. 



