SELAGIXELLA 



SELAGIXELLA 



3139 



F. Branches Yg in. or less wide: 



ate. 6-9 in. long ........ 2. denticulata 



3. serpens 



4. patula 

 FF. Branches ^in. or more 



wide: sts. 1-2 ft. long. . . 5. uncinata 



6. plumosa 



7. concinna 

 EE. Sis. articulated ............. 8. stolonifera 



9. Kraussiana 

 DD. Plants annual; Its. and st. weak 



and flaccid ............... 10. Cunningham!! 



11. brasiliensis 



12. apus 



13. albo-nitens 

 cc. Main sts. ascending, branched 



nearly or quite to the base. 

 D. Roots confined to the lower half 



of the sts. 

 E. Plants perennial, with con- 



tinuous sts. 

 F. Color of Its. and st. pale or 



bright green ............ 14. atroviridis 



15. californica 



16. Martens!! 

 FF. Color of hs. dark green, be- 



coming red: st. reddish 



brown ................ 17. rubella 



EE. Plants annual ............. 18. Poulteri 



DD. Roots confined to the base of the 



sts. 

 E. Sts. crowded in rosettes, curl- 



ing closely when dry ....... 19. involvens 



20. lepidophylla 



21. cuspidata 

 EE. Sts. 6-1S in. high, not curling 



in rosettes ............... 22. Emmeliana 



EEE. Sts. elongated (2 ft. or more), 



not crowded. 

 F. Lrs. equal-sided at base ____ 23. Wallichii 



24. Victoria 

 FF. Lts. produced on upper 



side at base ........... 25. gracilis 



26. Lobbi! 

 OOcJlam sts. climbing ............. 27. Willdenovii 



cccc. Main sts. erect, the branches con- 

 fined to the upper portion, naked 

 below. 

 D. Sts. not jointed. 



E. Color of sts. straw-colored, or 



at most only pink-tinted. 

 F. Lts. long, the ultimate divi- 



sions of st. %-$$in. wide. .28. grandis 

 FF. Lts. shorter or minute; the 

 ultimate divisions of st. 

 f*-H in- wide. 

 G. Plants usually less than 



a foot high ........... 29. viticulosa 



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



31. Braunii 



32. flabellata 



33. Vogelii 



34. Lyallii 



EE. Color of sts. crimson ........ 35. erythropus 



36. hsematodes 

 DD. Sts. 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. cordif olia 



39. molliceps 



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

 with branching sts. 45 in. long, many-ranked Ivs. 

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

 Native of the eastern half of the U. S., but replaced 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 also characterized 10 

 others. 



2. denticulata, Link. Fig. 3598. Sts. less than 6 in. 

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

 denticulate, cordate on the upper side at base and 

 imbricated over the st.; Ivs. of upper plane cuspidate. 



199 



Medit. region throughout. Trade names are vars. 

 aurea and f61iis variegatis. 



3. serpens, Spring. Sts. <>-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. W. Indies. 

 Long in cult. 



4. patula, Spring (S. sarmentosa, A. Br.). Sts. 

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

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

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

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

 acute. Jamaica. 



5. uncinata, Spring (Lycopbdium caesium and Selagi- 

 nella cxsia, Hort.). Sts. 1-2 ft. long, extending in a 

 somewhat naked tip beyond the branches, doublv 

 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. c&sia arborea" with the remark that S. 

 Isevigata was a synonym thereof. 



6. plumdsa, Baker. Sts. 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 plane hah* 

 as long, ovate, much imbricated. India, Ceylon, China, 

 Malay Isls. 



7. concinna, Spring (S. semdaia, Spring). Sts. 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 upper 

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

 cated. Mascarene Isls. Var. fdliis variegatis, Hort., 

 is cult. 



8. stolonifera, Spring. Sts. 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 auricled at 

 base. W. Indies. 



9. Kraussiana, A. Br. Sts. 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 st. acute, slightly imbricated over 

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

 Afr., Madeira. S. Brmrnii, Hort., is a dwarf form 

 from the Azores. Vars. aurea and variegata are Amer- 

 ican trade names. 



10. Cunninghamii, Baker. Sts. copiously pinnate, 

 the lower branches compound: Ivs. of lower plane ovate, 

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

 much imbricated over the st.; Ivs. of upper plane dis- 

 tinctly cuspidate. Brazil. 



11. brasiliensis, A. Br. Sts. copiously pinnate, the 

 lower slightly compound: Ivs. of lower plane mostly 

 spaced, acute, cordate at base, ciliate and imbricated 

 over the st. ; Ivs. of upper plane half as long, cuspidate. 

 Brazil. Similar to preceding, but with longer Ivs. 



12. apus, Spring. Sts. 1^1 in. long, angled above, 

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

 plane pale green, serrulate but not ciliate, cordate on 

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

 to Texas. Lycopodium densum, cult, at the Harvard 

 Botanic Garden, is said to belong here. 



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

 lower branches slightly compound: Ivs. of lower plane 

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

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



14. atroviridis, Spring. Sts. 6-12 in. long, ascending, 

 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. 



