PHANEROGAMIA : AXIAL ORGANS. 259 



2. Position on the Soil. 



A. Above ground (epig&us). 



B. Under ground (hypogceus). 



3. Form. 



A. Developed internodes (int. elongata). 



B. Undeveloped internodes (int. abbreviate?). 



C. Disciform expanded internodes (int. disciformia). 

 I). Concavely expanded internodes (int. concava). 



N. B. Rigid, pointed, leafless, or defoliated internodes are 

 called spines (spince) ; soft, curling, and thus climbing round 

 foreign objects, tendrils (cirrhi, capreoli). 



4. Various Internodes of the same Axis. 



A. Bearing true leaves and branches (caulis and truncus). 



N. B. Sometimes no leaves are developed (axis aphyllus), 

 or they fall off from the truncus, mostly at the end of the first 

 year (axis denudatus). The stem may grow out from the 

 terminal bud of an embryo, as in the simple stem, or out of 

 a trunk. A stem produced from a trunk might be called 

 scapus ; but this is a wholly superfluous term. 



B . Bearing only bracts, bracteoles, or flowers, peduncle (pedunculi) ; 



in a compound inflorescence the internode bearing a single 

 flower is called the pedicel (pedicellus). Receptaculum is a 

 superfluous expression in the Synantherece, pedunculus dis- 

 ciformis, conicus, &c., is simpler and more correct. Also in 

 Ficus, pedunculus coneavus. 



C. Internodes between calyx and pistil, receptacle (torus), e. g., 



in some Rosacece, torus disciformis (in Potentilla), torus con- 

 eavus (in Rosa). 



a. Internodes between calyx and stamens (e. g., in Rubus), or 



calyx and corolla (e. g., in Passiflora), the disc (discus), 

 e. g., planus (in Geum), d. tubulosus (in Cereus grandiflorus). 



b. Internodes between corolla and stamens, androphore (an- 



drophorum), e. g., a. elongatum (in Cleome). 



c. Internodes between stamens and pistil, gynophore (gynG- 



phorum\ e. g., g. conicum (in Rubus). 



D. Internodes between calyx and seed-buds, as a hollow disc 



enclosing the seed-buds, inferior germen (germen inferum), 

 e. g., in SynantherecB, Orchidacea. 



E. Internodes between stamens and seed-buds, as a plate with the 



borders curved inward together, in the cavity of which the 

 seed-buds occur, stalk-pistil (pistillum cauligenum). In 

 LiliacecK and Leguminosce (?). 



F. End of the stalk in the germen, as support of the seeds, sper- 



mophore (spermophorum), in seed-buds (gemmulce). (For the 

 parts of these see below, under the Seed-bud.) 



5 2 



