- Group 1Lycophytes, Monilophytes
- Group 2Gymnosperms
- Group 3Monocots
- Group 4Woody angiosperms with opposite or whorled leaves
- Group 5Woody angiosperms with alternate leaves
- Group 6Herbaceous angiosperms with inferior ovaries
- Group 7Herbaceous angiosperms with superior ovaries and zygomorphic flowers
- Group 8Herbaceous angiosperms with superior ovaries, actinomorphic flowers, and 2 or more distinct carpels
- Group 9Herbaceous angiosperms with superior ovaries, actinomorphic flowers, connate petals, and a solitary carpel or 2 or more connate carpels
- Group 10Herbaceous angiosperms with superior ovaries, actinomorphic flowers, distinct petals or the petals lacking, and 2 or more connate carpels
The report of Taxus ×media Rehd. in RI (Tucker 2006) was based on a hybrid with Taxus umbraculifera (Sieb. ex Endl.) Ravencroft var. hicksii (hort. ex Rehd.) Spjut as the seed parent and possibly Taxus biternata Spjut as the pollen parent (i.e., the second parent is not confidently known). The specimen shows leaves arranged in 4 or more ranks and radiating in ± all directions on the young shoots (as in T. umbraculifera). Taxus cuspidata, with which this plant shares some similarities, such as abruptly bent petioles and many rows of stomates, has leaves arranged in only 2 ranks (as to the attachment of the petioles), but the blades all ascending to erect. Reference: Spjut (2007).
1b. Winter bud scales sharply pointed to cuspidate, definitely keeled or folded; leaf blades abruptly tapering to the apex [Fig. 49]
2a. Low shrubs with straggling, diffusely branched habit; leaf blades 1–2 (–2.4) mm wide; stomates in 5–7 (–9) rows in each band; petioles gradually curved or with an abrupt bend near the junction of the branch, not clasping the branchlet; seeds round or somewhat compressed near apex, but not angled
Show photos of: Each photo represents one species in this genus.