throughout this specification , color names beginning with a small letter signify that the name of that color , as used in common speech , is aptly descriptive . color names beginning with a capital letter designate values based upon the r . h . s . colour chart , published by the royal horticultural society , london , england . many of the description values in this specification are based on and conform to those set forth by the international board for plant genetic resources institute grape descriptors ( vitis spp .) of 1983 and / or 1997 which was developed in collaboration with the office international de la vigne et du vin ( oiv ) and the international union for the protection of new varieties of plants ( upov ). the descriptive matter which follows pertains to ‘ sugratwentythree ’ plants grown in the vicinity of wasco , kern county , calif ., during 2000 , and is believed to apply to plants of the variety grown under similar conditions of soil and climate elsewhere : [ 0031 ] attitude during flowering on shoots which are not tied .— horizontal . [ 0032 ] color of dorsal side of internodes .— about green 144a with red 183b stripes . [ 0034 ] color of dorsal side of nodes .— about green 144a with red 183b stripes . [ 0044 ] color .— basal area of dorsal side heavily pigmented at approximately red 183b ; ventral side and tips about green 144b . [ 0049 ] color of upper surface of first 4 distal unfolded leaves .— green to faintly copper . [ 0050 ] average intensity of anthocyanin coloration of six distal leaves prior to flowering .— weak . [ 0051 ] density of prostrate hairs between veins at lower surface of 4 th distal unfolded leaf .— absent . [ 0052 ] density of erect hairs between veins at lower surface of 4 th distal unfolded leaf .— absent . [ 0053 ] density of prostrate hairs on veins at lower surface of 4 th distal unfolded leaf .— medium . [ 0054 ] density of erect hairs on veins at lower surface of 4 th distal unfolded leaf .— absent . [ 0061 ] anthocyanin coloration of main veins on the upper side of the blade .— absent . [ 0077 ] density of prostrate hairs between veins on lower surface of blade .— absent . [ 0078 ] density of erect hairs between veins on lower surface of blade .— absent . [ 0079 ] density of prostrate hairs on main veins on lower surface of blade .— sparse . [ 0080 ] density of erect hairs on main veins on lower surface of blade .— sparse . [ 0081 ] density of prostrate hairs on main veins on upper surface of blade .— absent . [ 0082 ] autumn coloration of leaves .— about yellow 11b ( typically , frost kills leaves before extensive color change , as leaves change color very late in the season ). [ 0090 ] anthocyanin coloration of main veins on lower leaf surface .— absent . [ 0123 ] time of bloom .— medium , as compared with similar varieties in the growing area of wasco , kern county , calif . [ 0126 ] ripening period .— medium , about 12 days after ‘ thompson seedless ’ variety . [ 0137 ] bunch length ( peduncle excluded ).— intermediate , about 14 . 3 cm .
a new and distinct grapevine variety characterized by round to ovate seedless black berries that are naturally large , firm , and of high eating quality .