| NODE | A vertex in a graph or a tree diagram; or, a point on a plant's stem from which a leaf emerges (4) |
| FLECHE | From "arrow", a slender spire; or, a point on a backgammon board (6) |
| SPINE | Thorny spike on a plant's stem, or backbone (5) |
| SCHEME | Systematic plan; a secret plot; an astrological diagram; or, a combination of colours in interior decorating (6) |
| NODAL | Pertaining to the joint of a stem, or the part from where a leaf emerges (5) |
| DIAGRAM | A graph or a blueprint? (7) |
| WHORL | Complete circle in a fingerprint; a single 360degrees tum in a spiral seashell; or, a verticil of leaves or petals radiating from a single point of a plant's stem (5) |
| SPIKE | Each of a series of projections on a track-running shoe; a variety of lavender; a sharp peak in a graph; or, an ear of wheat or barley (5) |
| WHORLS | 360degrees turns in spiral seashells; fingerprint patterns; or radial arrangements of petals or leaves around a plant's stem (6) |
| NIB | A bird's bill; or, a point of a fountain pen, suggestive of such a beak (3) |
| STRETCH | ------- limo or ------- a point (7) |
| EDGE | Sharpness of mind; a slight advantage; or, a line connecting two vertices in a graph (4) |
| AXIL | What is the upper angle between a branch or leafstalk and the stem from which it grows? (4) |
| APEX | A vertex in geometry (4) |
| PLOT | Place, as a point on a graph |
| SKIM | Pass lightly over a point on a Kipling character (4) |
| IONA | I love making a point on a Scottish island |
| CONE | It has a frustum and a vertex |
| LOOP | *Holds a plant stem to a support |
| BINE | Climbing plant's stem (4) |
