GLOSSARY. 



249 



Rha'-chig (pixi?, the backbone}. The 

 axis of a compound leaf, or of a spike. 



Kha'-phe (pa^>^, a stunt). In an anat- 

 ropous ovule, the ridge which con- 

 nects the chala/a with the hilum. 



Khi /oitl (p'i'a. a root ; elfios, form). 

 Root-like ; a name applied to the root- 

 like hairs found in bryophytes and 

 pteridophytes. 



Rhi'-zo-tax-y ip'ia, a root; rafts, ar- 

 rangement). Root-arrangement. 



Roo't stock. A horizontal, more or 

 less thickened, root like stem, either 

 on the ground or underground. 



Sca-la'r-i-form (scalaria, a ladder; 

 forma, form}. A name applied to 

 ducts with pits horizontally elongated 

 and so placed that the intervening 

 thickening ridges appear like the 

 rounds of a ladder. 



Scale (scala, a Jliglit of steps). Any 

 thin scarious body, as a degenerated 

 leaf, or flat trichome. 



Scle-re'ii chy-ma (o-KA^po?, hard: 

 tyxvua, an infusion). A tissue be- 

 longing to the fundamental system 

 and composed of cells that are thick- 

 walled, often excessively so. 



Sen te'l-lum (scutella, a small disk)- 

 The disk-like or shield-like cotyledon 

 of grasses. 



Seed. The fertilized and matured 

 ovule. 



Se'p al (from the modernized word 

 o-eVaAoi', a sepal). A calyx leaf. 



Se'-ta, pi. setae (seta, a bristle). A 

 bristle, or bristle-shaped body ; in 

 mosses, the stalk of the capsule. 



Sheath. A thin enveloping part, as of 

 a filament, leaf, or resin-duct. 



Sieve-cells. Cells belonging to the 

 phloem, and characterized by the pres- 

 ence of circumscribed and perforated 

 panels in the walls ; the panels are 

 sieve-plates, and the perforations 

 sieve-pores. 



So'-rus, pi. sorl (o-topo?, a heap}. In 

 ferns, the groups of sporangia, con- 

 stituting the so-called " fruit-dots ; " 

 in parasitic fungi, well-defined groups 



of spores, breaking through the epi- 

 dermis of the host. 



Spike (spica, an ear of corn). A flower- 

 cluster, having its flowers sessile on 

 an elongated axis. 



Spi'ke-let (diminutive of spike). A 

 secondary spike ; in grasses, the ulti- 

 mate flower-cluster, consisting of one 

 or more flowers subtended by a com- 

 mon pair of glumes. 



Spo-ra'n-gi-um, pi. sporangia 

 (spore ; ayyos, a vessel). The spore- 

 vessel ; applied to ferns and certain 

 lower groups. 



Spore (<r7ropa, seed). Originally used 

 as the analogue of seed in flowerless 

 plants -, now applied to any one-celled 

 or few-celled body which is separated 

 from the parent for the purpose of 

 reproduction, whether sexually or 

 asexually produced ; the different 

 methods of its production are indi- 

 cated by suitable prefixes. 



Spo-ro go'-ni-um, pi. sporogonia 

 (spore ; yoyjj, offspring). The whole 

 structure of the spore-bearing stage 

 of bryophytes. 



Sta'-meil (arr^w, the -warp or thread 

 of cloth). The male organ in phane- 

 rogams. 



Sti'g-ma (o-riy/uia, a spot, or mark). 

 The surface of a pistil without epi- 

 dermis which receives the pollen. 



Stig-ma't-ic. Relating to the stigma, 

 or stigma-like. 



Sto'-ma, pi. sto'mata (orojbta, a 

 mouth). Epidermal structures which 

 serve for facilitating gaseous inter- 

 changes with the external air, often 

 called "breathing-pores." 



Stro'-phi-ole (strophiolum, a small 

 wreath). An appendage at the hilum 

 of certain seeds. 



Style (oriJAos, a pillar}. The usually 

 attenuated portion of the pistil which 

 bears the stigma. 



Sus-pe'n-sor (suspendo, / hang). See 

 Pro-embryo. 



Syn-e'r-gi dae, or Synergides 

 (o-vi'epyeto, / ivork together). The two 

 nucleated bodies which accompany 



