I Googled "flower species name Catherine" and got the following links that may prove useful.
http://www.laspilitas.com/plants/287.htm
http://www.hort.net/gallery/view/ger/geroxka/
http://www.carnivorousplants.org/cpn/Species/v33n3p83_89.html
http://www.plantzafrica.com/plantqrs/scadoxkath.htm
http://www.ces.ncsu.edu/depts/hort/consumer/factsheets/roses/KatherineMorley.htm
http://www.ces.ncsu.edu/depts/hort/consumer/factsheets/daylilies/CatherineWoodbury.htm
I tried Googling "story Catherine flower" and got nothing useful. Stories
by various Catherine's
about flowers, but I didn't think that was what you meant. St. Catherine of Siena is said in one book about her to have picked flowers as she walked... Is that a significant enough connection?
~Lillian~Proud daughter of Ann and John
Proud sister of Lauren and Leah
Proud wife of David
Proud mother of
Alexander,
Scarlett,
Sophia, and
Gideon