52 BOTANICAL GAZETTE [JULY 
(mm. per min.) 
NAME oF PLANT PARTS OBSERVED ese h 
. @ 20 Optimum 
*Campanula glomerata (bell } unicellular hair from leaf blade or | .258 644@38° — 
ower etiole a 
*Capsella Bursa-pastoris unicellular hair from flower stalk 215 483@32 
(shepherd’s purse) g : 
*Cestrum elegans unicellular hair from stem or veins 161 | .428@35 
on under side of leaf s 
*Coleus Blumei Verschaf- cell is hair from stem at node or 276 892@35 
feltii of petiole 
Cucurbita maxima (squash) | cell ar hair ~- — 258 859@ 32° 
*Cuphea hyssopifolia cell of hair fro 121 258@ 34" 
*Cuphea i | (cigar plant) cell of hair fro pees -048 | .2 15@30" 
Sinden +3 sill eee -adetls of len 604 | .966@30" 
*Fuchsia ae aieilvlan hair oer eas stalk 175 322@ 3 
*Gaillardia poowitcks cell of hair from 227 703@ 36° 2 
*Gloxinia speciosa cell of hair from nti or petiole 322 |I .054@30" 
cell of hair from leaf op 351 |1.088@30 
site annuus (com- | cell of hair from edge of petiole 195 .420@35 
mo jower) cell of hair from midrib 08 <= 
Heliotropium peruvi unicellular hair from stem, surface | .121t | .386@34° 
m helio Sacer ag of leaf, or under side of midrib . 
sHibiecks | Cooperi (rose mal- oot hair from petiole or un- 75 oy — E 
der side of midri é 
*Isoloma hirs cell of hair from oo -193 
Seek mage ver hey Seater cell of hair from s 242 
Lobelia unicellular ue ee leaf edge, | .297 
petiole, or stem 
*Lopezia albiflora aectiiae: kate from eg -193 
unicellular hair from lea -322 
ee } rom see side of | .121 
mi 
Nitella (common species) ab ells 1.610 
Pelargonium quercifolium cell of conical - from petiole or | .322 
(oakleaf pelargonium) surfac 
ycopersicum t cell of tae Gant stem, leaf edge, or| .386 
(commo ) vein 
*Oxalis Bowi cell of hair from leaf-edge . 242 
*Primula ob¢onica ‘piper cell of hair from stem or leaf - 276 
*Saxifraga cotyledon palmata] cell of hair from edge of leaf -176 
(saxifrage, rockfoil) 
axifraga sarmentosa (beef- | cell of hair from flower stalk Sab 
steak saxifrage) 
cesar a pes (cineraria)| cell of hair from under surface of leaf| .193 
Streptosolen Jamesonii cell of hair from stem or leaf blade | .183 
esscantia nic cell of stamen hair 242 
ers 
escantia zebrina (wan-| cell of stamen hair 386 
dering Jew 
*Whitlavie ras aa cell of hair from leaf edge 107 
unicellular hair from petiole or calyx} .242 
~ * . * . leaf blade -193 
cell of glandular hair from leaf blade| .138 
* Those marked by an asterisk are here recorded for the first time. 
