1648 



SELAGINELLA 



GG. Stems 6-12 in. high, 

 not curling in 



rosettes 22. Emmeliana 



GGG. Stems elongated (2 

 ft. or more), not 

 crowded. 

 H Lvs. equal-sided at 



base 23. Wallichii 



24. Victoria 

 HH. Lvs. produced on 



upper side at base.25. gracilis 

 26. Lobbii 



ccc. Main stems climbing 27. Willdenovii 



CCCC. Main stems erect, the branches 

 confined to the tipper portion, 

 naked below. 

 D. Stems not jointed, 



E. Color of stems straw-col- 

 ored, or at most only 

 pink-tinted. 



F. Lvs. long, the ultimate 

 divisions of stem %-% 



in. wide 28. grandis 



FF. Lvs. shorter or minute; 



the ultimate divisions 



of stem one -sixth, to 



one-twelfth in. wide. 



G. Plants usually less 



than a foot high 29 



GG. Plants 1-2 ft, high. ..30 



EE. Color of stems crimson . . .35 



viticulosa 



caulescens 



Braunii 



flabellata 



Vogelii 



Lyallii 



erythropus 



haematodes 



DD. Stems jointed in lower two- 

 thirds 37. geniculata 



BB. Foliage of spike of two kinds, the 

 smaller forming a lower plane, 



the larger an upper 38. cordifolia 



39. molliceps 



1. rupestris, Spring. A small, rock-loving perennial, 

 with branching stems 4-5 in. long, many-ranked Ivs. 

 ending in a white awn, and square, 4-angled spikes. 

 Native of the eastern half of the United States, but re- 

 placed by many allied species in the Rocky Mts. and on 

 the Pacific coast. The writer has separated 6 of these 

 and Dr. Hieronymus, at Berlin, has recently character- 

 ized 10 others. 



2. denticulata, Link. Fig. 2303. Stems less than 6 in. 

 long, matted: Ivs. of the lower plane slightly spaced, 

 denticulate, cordate on the upper side at base and im- 

 bricated over the stem; Ivs. of upper plane cuspidate. 

 Mediterranean region throughout. Trade names are 

 vars. aurea and fdliis variegatis. 



3. serpens, Spring. Stems 6-9 in. long, trailing, bright 

 green, copiously branched : Ivs. of lower plane crowded, 

 obtuse, spreading, ciliated at the rounded base; Ivs. of 

 upper plane obliquely oblong, acute. West Indies. 

 Long in cultivation. 



4. patula, Spring (S. sarmentdsa, A. Br. ). Stems 

 slender, trailing, pale green, 6-9 in. Ions, with long, 

 tail-like tip, and fewer short pinnate branches: Ivs. of 

 lower plane crowded, erect-spreading, oblong-lanceolate, 

 somewhat acute; Ivs. of lower plane one-third as long, 

 acute. Jamaica. 



5. uncinata, Spring (Lycopddium ccesium and Selagi- 

 nella vcesia, Hort.). Stems 1-2 ft. long, extending in a 

 somewhat naked tip beyond the branches, doubly 

 grooved above, with short, alternate branches : Ivs. 

 thin, blue-green, with a distinct midrib, slightly more 

 produced on the upper side; Ivs. of upper plane cuspi- 

 date, much imbricated. China. In 1893 John Saul 

 offered " S. ccesia arborea " with the remark that S. 

 Icevigata was a synonym thereof. 



6. plumdsa, Baker. Stems 6-12 in. long, flat above, 

 often forked near the base: Ivs. of lower plane close, 

 bright green, much more produced on upper side of 

 midrib, ciliated on both sides at base; Ivs. of upper 



SELAGINELLA 



plane half as long, ovate, much imbricated. India, Cey- 

 lon, China, Malay Isles. 



7. concinna, Spring (S. serrulata, Spring). Stems 

 1 ft. or more long, copiously pinnately branched, with 

 more or less fan-shaped compound branches: Ivs of 

 lower plane crowded, bright green, glossy, much dilated 

 and rigidly ciliate on the upper side at base; Ivs. of 

 iippei plane one-third as long, long-cuspidate, much 

 imbricated. Mascarene Islands. Var. fdliis variegatis. 

 Hort., is cultivated. 



8. stolonifera, Spring. Stems a foot or more long, 

 with a more or less naked tip, angled above and below, 

 with short, compound branches: Ivs. of lower plane 

 closely set, rigid, acute, short-ciliate and minutely auri- 

 cled at base. West Indies. 



9. Kraussiana, A. Br. Stems 6-12 in. long, flat on the 

 back, rounded on the face, copiously pinnate, with 

 compound branches : Ivs. of upper plane spaced on the 

 branches and main stem, acute, slightly imbricated over 

 the stem; Ivs. of upper plane obliquely ovate, acute. 

 Africa, Madeira. S. Brbwnii, Hort., is a dwarf form 

 from the Azores. Vars. aurea and variegata are 

 American trade names. 



10. Cunninghami, Baker. Stems copiously pinnate, 

 the lower branches compound : Ivs. of lower plane ovate 

 or oblong, cordate and very unequal-sided at base, 

 much imbricated over the stem; Ivs. of upper plane 

 distinctly cuspidate. Brazil. 



11. Brasiliensis, A. Br. Stems copiously pinnate, the 

 lower slightly compound: Ivs. of lower plane mostly 

 spaced, acute, cordate at base, ciliate and imbricated 

 over the stem; Ivs. of upper plane half as long, cuspi- 

 date. Brazil. Similar to preceding, but with longer 

 leaves. 



12. apus, Spring. Stems 1-4 in. long, angled above, 

 with short, simple or forked branches: Ivs. of upper 

 plane pale green, serrulate but not ciliate, cordate on 

 the upper side; Ivs. of the upper plane ovate. Canada 

 to Texas. Lycopodium densum, cultivated at the Har- 

 vard Botanic Garden, is said to belong here. 



13. albo-nitens, Spring. Stems slender, trailing, the 

 lower branches slightly compound: Ivs. of lower plane 

 spaced on main stem, short-ciliate, bright green; Ivs. of 

 upper plane one-third as long, cuspidate. West Indies. 



2303. Club Moss used to cover the soil of an orchid pot 

 Selaeinella denticulata (X 34). 



14. atroviridis, Spring. Stems 6-12 in. long, ascend 

 ing, doubly grooved above : Ivs. of lower plane spuriously 

 3-nerved, firm, broadly rounded; Ivs. of the upper plane 

 half as long, long-cuspidate, much imbricated. India. 



15. Califdrnica, Spring. Stems 4-6 in. long, 4-angled, 

 copiously pinnate: Ivs. of lower plane ovate, minutely 



