GLOSSARY AND INDEX. 



157 



Sessile (Lat. set/ere, to sit), without 



a stalk or petiole. 

 Setif orm (Lat. seta, a bristle, and 



for mil. form), bristle-like. 

 Shield-fern. V. Dryopteris. 

 Sigillariaceae, 6 3 . 



Sinuate (Lat. sinus, a bending), 

 having the margin alternately bend- 

 ing inward and outward. 



Sinus (Lat. a bending), a recess or 

 bay ; the re-entering space between 

 two lobes. 



Sorus (plu. tori) (Gr. o-upds, a heap 

 or cluster), the clusters of fruit in the 



POLYPODIACK^. 



Spatulate (Lat. spatula, a little 



spoon), shaped like a spatula. 

 Species, 44- 

 Specific Names, 41. 

 Spermaphytes (Gr. o^'pnia, a 



seed, and 4>\nov, a plant), 10, 20, 50. 



Literature of, 59. 

 Spinulose (Lat. spinti, a thorn), 



thorny. , 

 Spleenwort. Vide Aspleni- 



um. 



Sporangium (plu. sporangia) (Gr. 

 o-jropos, a seed, and ayyos, a vessel), 

 the case or capsule enclosing the 

 spores, 10. 



Spore (Gr. an-opos, seed), the fruit 

 of the higher cryptogams, produced 

 asexually, 10, 18. 



Sporocarp (Gr. <nrop<k, seed, and 

 cap7ros, fruit), the fruit- bearing re- 

 ceptacle in Marsilia, etc. 



Squamous (Lat. squama, a scale), 

 with appressed scales. 



Stellate (Lat. stella, a star), star- 

 shaped. 



Stipe (Lat. stipes, a stock), the stem 

 of a frond, 8, 25. 



Stoma (plu. stomata) (Gr. a mouth), 

 the breathing pores of plants, 26, 33. 



Stramineous (Lat. stramen, 

 straw), straw-colored. 



Struthiopteris, 101 ; also 2, 14, 81. 



Sub- (as a prefix), about, nearly, 

 somewhat. 



Subulate (Lat. subula, a shoe 



maker's awl), awl-shaped. 

 Superior, higher, applied toindusia 



that are attached above the sorus as 



in Dryopteris. 



Synonymy, 44- 



Taenitis. Vide Cheilogram- 

 ma. 



Tectaria, 118; also 16, 80. 



Ternate (Lat. term', three each), 

 branching into three nearly equal di- 

 visions. 



Tertiary Age, Pieridophytes of, 

 63- 



Thallophytes (Gr. floAAos, a young 

 shoot, and <f>vrov, a plant), a group of 

 plants including the lichens, fungi, 

 and algae, 50. 



Thalloid (Gr. flaAAos, a young shoot, 

 and eZSos, form), having the form of a 

 thallus, i. e., no leafy axis. 



Thalloid Phase, 19. 



Tissues, 24. 



Tissue Systems, 25. 



TomentOSe (Lat. tomentum, a 

 stuffing of wool), covered with mat- 

 ted woolly hairs. 



Tomentum (Lat. a stuffing of 

 wool), the dense matted woolly hair 

 found on some ferns as many species 

 of Cheilanthes. 



Tri- (Lat. iris, three), (as a prefix) 

 three, thrice. 



Trichomanes, 74; also 6, n, 17. 



Trichomes (Gr. flpi'f, hair), hairs, 

 variously modified as scales, indusia, 

 sporangia, etc., produced from the 

 epidermal cells, 26. 



Triquetrous (Lat. triyuetrus), 

 three-angled. 



Truncate (Lat. truncare, to cut 

 short), cut off abruptly. 



Tufted, growing in clusters. 



U 



Undulate (Lat. undula,\a. little 

 wave), wavy-margined. 



