Campanales.] 



CALYCERACE^:. 



'01 



Order CCLXXII. CALYCERACE.E.-Calycers. 



Calycerese, R. Broicn in Lmn. Trans. 12. 132. (1816); Rich, in Man. Mus. 6.76. [1820); DC. Prodr v 1- 

 Endl. Gen. cxxi.— Boopideae, Cassini in Diet, des Sc. 5. 26. Supp. (1817). 



Diagnosis.— (7a??ipa?iaZ Exogens, with a 1-celled ovary, valvate corolla, syngeimious 

 anthers, liendulovs ovule, and albuminous seeds. 



Herbaceous plants. Leaves alternate, without stipules. Flowers collected in heads, 

 which are either terminal or opposite the leaves, surrounded by an involucre. Florets 

 sessile, hermaphrodite, or neuter. 

 Calyx superior, of 5 unequal pieces. 

 Corolla regular, valvate, funnel-shaped, 

 \\'ith a long slender tube and 5 seg- 

 ments, each of which has 3 principal 

 veins ; glandular spaces below the sta- 

 mens and alternate with them. Sta- 

 mens 5, monadelphous; 

 anthers combined by 

 their lower half in a 

 cylinder. Ovary infe- 

 rior, 1-celled ; ovule 

 solitary, pendidous ; 

 style simple, smooth ; 

 stigma capitate. Fruit 

 an indehiscent peri- 

 carp, usually cro^Tied 

 by the rigid spiny seg- 

 ments of the calyx. 

 Seed solitary, pendu- 

 lous, sessile ; embryo 

 in the axis of fleshy 

 albumen ; radicle su- 

 perior, longer than the 

 plano-convex cotyle- 

 dons. 



A very small and 

 curious Order, differ- 

 ing from Composites in 

 nothing but their albu- 

 men, pendulous ovaile, and half-distinct anthers, and from Teazehvorts in their filaments 

 being monadelphous and their anthers partly connate. They may therefore be con- 

 sidered to hold a middle station between those two Orders. 



Such species as are kno\\Ti mhabit South America, rarely occurring in the tropical 

 districts, but more plentiful in South Chile. They are, however, not common anywhere. 

 They are described as ascending from the sea coast to considerable altitudes on the 

 Andes. 



They are not mentioned as possessing any useful quality. 



Fig. CCCCLXXII 



Gamocarpha, DC. 

 Boopis, Juss. 

 Nastanthus, Miers. 



iCalycera, Cav. 

 Acicarpha, Juss. 



GENERA. 



Cryptoearpha, R. Br. 

 Sommea, Bory. 



Acanthosperma^kmh. 

 Echiitolema, Jacq. f. 



Numbers. Gen. 5. Sp. 10. 

 Position. — Asteraceie. — CalyceracevE. — Dipsacaceae. 



Fig. CCCCLXXII.— Acicarpha spathulata.— -RtcAard. 1. section of an entire flower; 2. perpendi- 

 cular section of ripe fruit. 



